Merge pull request #4217 from embassy-rs/rand09

Add rand-core v0.9 support.

63 files changed, 218 insertions, 122 deletions

diff --git a/embassy-imxrt/Cargo.toml b/embassy-imxrt/Cargo.toml
index f16002a8d..d8cf3aaba 100644
--- a/embassy-imxrt/Cargo.toml
+++ b/embassy-imxrt/Cargo.toml
@@ -80,9 +80,11 @@ cortex-m = "0.7.6"
 critical-section = "1.1"
 embedded-io = { version = "0.6.1" }
 embedded-io-async = { version = "0.6.1" }
-rand_core = "0.6.4"
 fixed = "1.23.1"
 
+rand-core-06 = { package = "rand_core", version = "0.6" }
+rand-core-09 = { package = "rand_core", version = "0.9" }
+
 embedded-hal-02 = { package = "embedded-hal", version = "0.2.6", features = [
     "unproven",
 ] }
diff --git a/embassy-imxrt/src/rng.rs b/embassy-imxrt/src/rng.rs
index 67e7ab65d..75f243df9 100644
--- a/embassy-imxrt/src/rng.rs
+++ b/embassy-imxrt/src/rng.rs
@@ -6,7 +6,6 @@ use core::task::Poll;
 
 use embassy_futures::block_on;
 use embassy_sync::waitqueue::AtomicWaker;
-use rand_core::{CryptoRng, RngCore};
 
 use crate::clocks::{enable_and_reset, SysconPeripheral};
 use crate::interrupt::typelevel::Interrupt;
@@ -201,32 +200,63 @@ impl<'d> Rng<'d> {
             .mctl()
             .modify(|_, w| w.trng_acc().set_bit().prgm().clear_bit());
     }
-}
 
-impl RngCore for Rng<'_> {
-    fn next_u32(&mut self) -> u32 {
+    /// Generate a random u32
+    pub fn blocking_next_u32(&mut self) -> u32 {
         let mut bytes = [0u8; 4];
         block_on(self.async_fill_bytes(&mut bytes)).unwrap();
         u32::from_ne_bytes(bytes)
     }
 
-    fn next_u64(&mut self) -> u64 {
+    /// Generate a random u64
+    pub fn blocking_next_u64(&mut self) -> u64 {
         let mut bytes = [0u8; 8];
         block_on(self.async_fill_bytes(&mut bytes)).unwrap();
         u64::from_ne_bytes(bytes)
     }
 
-    fn fill_bytes(&mut self, dest: &mut [u8]) {
+    /// Fill a slice with random bytes.
+    pub fn blocking_fill_bytes(&mut self, dest: &mut [u8]) {
         block_on(self.async_fill_bytes(dest)).unwrap();
     }
+}
 
-    fn try_fill_bytes(&mut self, dest: &mut [u8]) -> Result<(), rand_core::Error> {
-        self.fill_bytes(dest);
+impl<'d> rand_core_06::RngCore for Rng<'d> {
+    fn next_u32(&mut self) -> u32 {
+        self.blocking_next_u32()
+    }
+
+    fn next_u64(&mut self) -> u64 {
+        self.blocking_next_u64()
+    }
+
+    fn fill_bytes(&mut self, dest: &mut [u8]) {
+        self.blocking_fill_bytes(dest);
+    }
+
+    fn try_fill_bytes(&mut self, dest: &mut [u8]) -> Result<(), rand_core_06::Error> {
+        self.blocking_fill_bytes(dest);
         Ok(())
     }
 }
 
-impl CryptoRng for Rng<'_> {}
+impl<'d> rand_core_06::CryptoRng for Rng<'d> {}
+
+impl<'d> rand_core_09::RngCore for Rng<'d> {
+    fn next_u32(&mut self) -> u32 {
+        self.blocking_next_u32()
+    }
+
+    fn next_u64(&mut self) -> u64 {
+        self.blocking_next_u64()
+    }
+
+    fn fill_bytes(&mut self, dest: &mut [u8]) {
+        self.blocking_fill_bytes(dest);
+    }
+}
+
+impl<'d> rand_core_09::CryptoRng for Rng<'d> {}
 
 struct Info {
     regs: crate::pac::Trng,
diff --git a/embassy-nrf/Cargo.toml b/embassy-nrf/Cargo.toml
index 6ca099599..e4e143c65 100644
--- a/embassy-nrf/Cargo.toml
+++ b/embassy-nrf/Cargo.toml
@@ -154,6 +154,9 @@ embedded-hal-async = { version = "1.0" }
 embedded-io = { version = "0.6.0" }
 embedded-io-async = { version = "0.6.1" }
 
+rand-core-06 = { package = "rand_core", version = "0.6" }
+rand-core-09 = { package = "rand_core", version = "0.9" }
+
 nrf-pac = "0.1.0"
 
 defmt = { version = "0.3", optional = true }
@@ -162,7 +165,6 @@ log = { version = "0.4.14", optional = true }
 cortex-m-rt = ">=0.6.15,<0.8"
 cortex-m = "0.7.6"
 critical-section = "1.1"
-rand_core = "0.6.3"
 fixed = "1.10.0"
 embedded-storage = "0.3.1"
 embedded-storage-async = "0.4.1"
diff --git a/embassy-nrf/src/rng.rs b/embassy-nrf/src/rng.rs
index e75ffda00..7e42dc938 100644
--- a/embassy-nrf/src/rng.rs
+++ b/embassy-nrf/src/rng.rs
@@ -167,6 +167,21 @@ impl<'d, T: Instance> Rng<'d, T> {
 
         self.stop();
     }
+
+    /// Generate a random u32
+    pub fn blocking_next_u32(&mut self) -> u32 {
+        let mut bytes = [0; 4];
+        self.blocking_fill_bytes(&mut bytes);
+        // We don't care about the endianness, so just use the native one.
+        u32::from_ne_bytes(bytes)
+    }
+
+    /// Generate a random u64
+    pub fn blocking_next_u64(&mut self) -> u64 {
+        let mut bytes = [0; 8];
+        self.blocking_fill_bytes(&mut bytes);
+        u64::from_ne_bytes(bytes)
+    }
 }
 
 impl<'d, T: Instance> Drop for Rng<'d, T> {
@@ -180,31 +195,37 @@ impl<'d, T: Instance> Drop for Rng<'d, T> {
     }
 }
 
-impl<'d, T: Instance> rand_core::RngCore for Rng<'d, T> {
+impl<'d, T: Instance> rand_core_06::RngCore for Rng<'d, T> {
     fn fill_bytes(&mut self, dest: &mut [u8]) {
         self.blocking_fill_bytes(dest);
     }
-
     fn next_u32(&mut self) -> u32 {
-        let mut bytes = [0; 4];
-        self.blocking_fill_bytes(&mut bytes);
-        // We don't care about the endianness, so just use the native one.
-        u32::from_ne_bytes(bytes)
+        self.blocking_next_u32()
     }
-
     fn next_u64(&mut self) -> u64 {
-        let mut bytes = [0; 8];
-        self.blocking_fill_bytes(&mut bytes);
-        u64::from_ne_bytes(bytes)
+        self.blocking_next_u64()
     }
-
-    fn try_fill_bytes(&mut self, dest: &mut [u8]) -> Result<(), rand_core::Error> {
+    fn try_fill_bytes(&mut self, dest: &mut [u8]) -> Result<(), rand_core_06::Error> {
         self.blocking_fill_bytes(dest);
         Ok(())
     }
 }
 
-impl<'d, T: Instance> rand_core::CryptoRng for Rng<'d, T> {}
+impl<'d, T: Instance> rand_core_06::CryptoRng for Rng<'d, T> {}
+
+impl<'d, T: Instance> rand_core_09::RngCore for Rng<'d, T> {
+    fn fill_bytes(&mut self, dest: &mut [u8]) {
+        self.blocking_fill_bytes(dest);
+    }
+    fn next_u32(&mut self) -> u32 {
+        self.blocking_next_u32()
+    }
+    fn next_u64(&mut self) -> u64 {
+        self.blocking_next_u64()
+    }
+}
+
+impl<'d, T: Instance> rand_core_09::CryptoRng for Rng<'d, T> {}
 
 /// Peripheral static state
 pub(crate) struct State {
diff --git a/embassy-rp/Cargo.toml b/embassy-rp/Cargo.toml
index 8fb8a50fd..849cb549a 100644
--- a/embassy-rp/Cargo.toml
+++ b/embassy-rp/Cargo.toml
@@ -157,7 +157,6 @@ embedded-io = { version = "0.6.1" }
 embedded-io-async = { version = "0.6.1" }
 embedded-storage = { version = "0.3" }
 embedded-storage-async = { version = "0.4.1" }
-rand_core = "0.6.4"
 fixed = "1.28.0"
 
 rp-pac = { version = "7.0.0" }
@@ -167,6 +166,9 @@ embedded-hal-1 = { package = "embedded-hal", version = "1.0" }
 embedded-hal-async = { version = "1.0" }
 embedded-hal-nb = { version = "1.0" }
 
+rand-core-06 = { package = "rand_core", version = "0.6" }
+rand-core-09 = { package = "rand_core", version = "0.9" }
+
 pio = { version = "0.3" }
 rp2040-boot2 = "0.3"
 document-features = "0.2.10"
diff --git a/embassy-rp/src/clocks.rs b/embassy-rp/src/clocks.rs
index 857877680..d79bffab3 100644
--- a/embassy-rp/src/clocks.rs
+++ b/embassy-rp/src/clocks.rs
@@ -1776,7 +1776,8 @@ impl<'d, T: GpoutPin> Drop for Gpout<'d, T> {
 pub struct RoscRng;
 
 impl RoscRng {
-    fn next_u8() -> u8 {
+    /// Get a random u8
+    pub fn next_u8() -> u8 {
         let random_reg = pac::ROSC.randombit();
         let mut acc = 0;
         for _ in 0..u8::BITS {
@@ -1785,26 +1786,60 @@ impl RoscRng {
         }
         acc
     }
+
+    /// Get a random u32
+    pub fn next_u32(&mut self) -> u32 {
+        rand_core_09::impls::next_u32_via_fill(self)
+    }
+
+    /// Get a random u64
+    pub fn next_u64(&mut self) -> u64 {
+        rand_core_09::impls::next_u64_via_fill(self)
+    }
+
+    /// Fill a slice with random bytes
+    pub fn fill_bytes(&mut self, dest: &mut [u8]) {
+        dest.fill_with(Self::next_u8)
+    }
 }
 
-impl rand_core::RngCore for RoscRng {
-    fn try_fill_bytes(&mut self, dest: &mut [u8]) -> Result<(), rand_core::Error> {
-        Ok(self.fill_bytes(dest))
+impl rand_core_06::RngCore for RoscRng {
+    fn next_u32(&mut self) -> u32 {
+        self.next_u32()
+    }
+
+    fn next_u64(&mut self) -> u64 {
+        self.next_u64()
+    }
+
+    fn fill_bytes(&mut self, dest: &mut [u8]) {
+        self.fill_bytes(dest);
+    }
+
+    fn try_fill_bytes(&mut self, dest: &mut [u8]) -> Result<(), rand_core_06::Error> {
+        self.fill_bytes(dest);
+        Ok(())
     }
+}
+
+impl rand_core_06::CryptoRng for RoscRng {}
 
+impl rand_core_09::RngCore for RoscRng {
     fn next_u32(&mut self) -> u32 {
-        rand_core::impls::next_u32_via_fill(self)
+        self.next_u32()
     }
 
     fn next_u64(&mut self) -> u64 {
-        rand_core::impls::next_u64_via_fill(self)
+        self.next_u64()
     }
 
     fn fill_bytes(&mut self, dest: &mut [u8]) {
-        dest.fill_with(Self::next_u8)
+        self.fill_bytes(dest);
     }
 }
 
+impl rand_core_09::CryptoRng for RoscRng {}
+
 /// Enter the `DORMANT` sleep state. This will stop *all* internal clocks
 /// and can only be exited through resets, dormant-wake GPIO interrupts,
 /// and RTC interrupts. If RTC is clocked from an internal clock source
diff --git a/embassy-rp/src/trng.rs b/embassy-rp/src/trng.rs
index a8a0172be..a3f23c1f2 100644
--- a/embassy-rp/src/trng.rs
+++ b/embassy-rp/src/trng.rs
@@ -7,7 +7,6 @@ use core::task::Poll;
 
 use embassy_hal_internal::{Peri, PeripheralType};
 use embassy_sync::waitqueue::AtomicWaker;
-use rand_core::Error;
 
 use crate::interrupt::typelevel::{Binding, Interrupt};
 use crate::peripherals::TRNG;
@@ -369,7 +368,7 @@ impl<'d, T: Instance> Trng<'d, T> {
     }
 }
 
-impl<'d, T: Instance> rand_core::RngCore for Trng<'d, T> {
+impl<'d, T: Instance> rand_core_06::RngCore for Trng<'d, T> {
     fn next_u32(&mut self) -> u32 {
         self.blocking_next_u32()
     }
@@ -379,16 +378,32 @@ impl<'d, T: Instance> rand_core::RngCore for Trng<'d, T> {
     }
 
     fn fill_bytes(&mut self, dest: &mut [u8]) {
-        self.blocking_fill_bytes(dest)
+        self.blocking_fill_bytes(dest);
     }
 
-    fn try_fill_bytes(&mut self, dest: &mut [u8]) -> Result<(), Error> {
+    fn try_fill_bytes(&mut self, dest: &mut [u8]) -> Result<(), rand_core_06::Error> {
         self.blocking_fill_bytes(dest);
         Ok(())
     }
 }
 
-impl<'d, T: Instance> rand_core::CryptoRng for Trng<'d, T> {}
+impl<'d, T: Instance> rand_core_06::CryptoRng for Trng<'d, T> {}
+
+impl<'d, T: Instance> rand_core_09::RngCore for Trng<'d, T> {
+    fn next_u32(&mut self) -> u32 {
+        self.blocking_next_u32()
+    }
+
+    fn next_u64(&mut self) -> u64 {
+        self.blocking_next_u64()
+    }
+
+    fn fill_bytes(&mut self, dest: &mut [u8]) {
+        self.blocking_fill_bytes(dest);
+    }
+}
+
+impl<'d, T: Instance> rand_core_09::CryptoRng for Trng<'d, T> {}
 
 /// TRNG interrupt handler.
 pub struct InterruptHandler<T: Instance> {
diff --git a/embassy-stm32/Cargo.toml b/embassy-stm32/Cargo.toml
index 972307bec..35c1291fd 100644
--- a/embassy-stm32/Cargo.toml
+++ b/embassy-stm32/Cargo.toml
@@ -63,13 +63,15 @@ embedded-can = "0.4"
 embedded-storage = "0.3.1"
 embedded-storage-async = { version = "0.4.1" }
 
+rand-core-06 = { package = "rand_core", version = "0.6" }
+rand-core-09 = { package = "rand_core", version = "0.9" }
+
 
 defmt = { version = "0.3", optional = true }
 log = { version = "0.4.14", optional = true }
 cortex-m-rt = ">=0.6.15,<0.8"
 cortex-m = "0.7.6"
 futures-util = { version = "0.3.30", default-features = false }
-rand_core = "0.6.3"
 sdio-host = "0.9.0"
 critical-section = "1.1"
 #stm32-metapac = { version = "16" }
diff --git a/embassy-stm32/src/rng.rs b/embassy-stm32/src/rng.rs
index 8fa1b3a9d..312f343b9 100644
--- a/embassy-stm32/src/rng.rs
+++ b/embassy-stm32/src/rng.rs
@@ -7,7 +7,6 @@ use core::task::Poll;
 
 use embassy_hal_internal::PeripheralType;
 use embassy_sync::waitqueue::AtomicWaker;
-use rand_core::{CryptoRng, RngCore};
 
 use crate::interrupt::typelevel::Interrupt;
 use crate::{interrupt, pac, peripherals, rcc, Peri};
@@ -184,19 +183,9 @@ impl<'d, T: Instance> Rng<'d, T> {
 
         Ok(())
     }
-}
-
-impl<'d, T: Instance> Drop for Rng<'d, T> {
-    fn drop(&mut self) {
-        T::regs().cr().modify(|reg| {
-            reg.set_rngen(false);
-        });
-        rcc::disable::<T>();
-    }
-}
 
-impl<'d, T: Instance> RngCore for Rng<'d, T> {
-    fn next_u32(&mut self) -> u32 {
+    /// Get a random u32
+    pub fn next_u32(&mut self) -> u32 {
         loop {
             let sr = T::regs().sr().read();
             if sr.seis() | sr.ceis() {
@@ -207,13 +196,15 @@ impl<'d, T: Instance> RngCore for Rng<'d, T> {
         }
     }
 
-    fn next_u64(&mut self) -> u64 {
+    /// Get a random u64
+    pub fn next_u64(&mut self) -> u64 {
         let mut rand = self.next_u32() as u64;
         rand |= (self.next_u32() as u64) << 32;
         rand
     }
 
-    fn fill_bytes(&mut self, dest: &mut [u8]) {
+    /// Fill a slice with random bytes
+    pub fn fill_bytes(&mut self, dest: &mut [u8]) {
         for chunk in dest.chunks_mut(4) {
             let rand = self.next_u32();
             for (slot, num) in chunk.iter_mut().zip(rand.to_ne_bytes().iter()) {
@@ -221,14 +212,53 @@ impl<'d, T: Instance> RngCore for Rng<'d, T> {
             }
         }
     }
+}
+
+impl<'d, T: Instance> Drop for Rng<'d, T> {
+    fn drop(&mut self) {
+        T::regs().cr().modify(|reg| {
+            reg.set_rngen(false);
+        });
+        rcc::disable::<T>();
+    }
+}
 
-    fn try_fill_bytes(&mut self, dest: &mut [u8]) -> Result<(), rand_core::Error> {
+impl<'d, T: Instance> rand_core_06::RngCore for Rng<'d, T> {
+    fn next_u32(&mut self) -> u32 {
+        self.next_u32()
+    }
+
+    fn next_u64(&mut self) -> u64 {
+        self.next_u64()
+    }
+
+    fn fill_bytes(&mut self, dest: &mut [u8]) {
+        self.fill_bytes(dest);
+    }
+
+    fn try_fill_bytes(&mut self, dest: &mut [u8]) -> Result<(), rand_core_06::Error> {
         self.fill_bytes(dest);
         Ok(())
     }
 }
 
-impl<'d, T: Instance> CryptoRng for Rng<'d, T> {}
+impl<'d, T: Instance> rand_core_06::CryptoRng for Rng<'d, T> {}
+
+impl<'d, T: Instance> rand_core_09::RngCore for Rng<'d, T> {
+    fn next_u32(&mut self) -> u32 {
+        self.next_u32()
+    }
+
+    fn next_u64(&mut self) -> u64 {
+        self.next_u64()
+    }
+
+    fn fill_bytes(&mut self, dest: &mut [u8]) {
+        self.fill_bytes(dest);
+    }
+}
+
+impl<'d, T: Instance> rand_core_09::CryptoRng for Rng<'d, T> {}
 
 trait SealedInstance {
     fn regs() -> pac::rng::Rng;
diff --git a/examples/mimxrt6/Cargo.toml b/examples/mimxrt6/Cargo.toml
index b0c56f003..27c3a27dc 100644
--- a/examples/mimxrt6/Cargo.toml
+++ b/examples/mimxrt6/Cargo.toml
@@ -20,7 +20,6 @@ embedded-hal-async = "1.0.0"
 
 mimxrt600-fcb = "0.2.2"
 panic-probe = { version = "0.3", features = ["print-defmt"] }
-rand = { version = "0.8.5", default-features = false }
 
 # cargo build/run
 [profile.dev]
diff --git a/examples/mimxrt6/src/bin/rng.rs b/examples/mimxrt6/src/bin/rng.rs
index 5f64cb96a..9468dd109 100644
--- a/examples/mimxrt6/src/bin/rng.rs
+++ b/examples/mimxrt6/src/bin/rng.rs
@@ -7,7 +7,6 @@ use defmt::*;
 use embassy_executor::Spawner;
 use embassy_imxrt::rng::Rng;
 use embassy_imxrt::{bind_interrupts, peripherals, rng};
-use rand::RngCore;
 use {defmt_rtt as _, panic_probe as _};
 
 bind_interrupts!(struct Irqs {
@@ -29,10 +28,10 @@ async fn main(_spawner: Spawner) {
     // RngCore interface
     let mut random_bytes = [0; 16];
 
-    let random_u32 = rng.next_u32();
-    let random_u64 = rng.next_u64();
+    let random_u32 = rng.blocking_next_u32();
+    let random_u64 = rng.blocking_next_u64();
 
-    rng.fill_bytes(&mut random_bytes);
+    rng.blocking_fill_bytes(&mut random_bytes);
 
     info!("random_u32 {}", random_u32);
     info!("random_u64 {}", random_u64);
diff --git a/examples/nrf-rtos-trace/Cargo.toml b/examples/nrf-rtos-trace/Cargo.toml
index af12212cd..ba609d889 100644
--- a/examples/nrf-rtos-trace/Cargo.toml
+++ b/examples/nrf-rtos-trace/Cargo.toml
@@ -23,7 +23,6 @@ embassy-nrf = { version = "0.3.1", path = "../../embassy-nrf", features = ["nrf5
 cortex-m = { version = "0.7.6", features = ["inline-asm", "critical-section-single-core"] }
 cortex-m-rt = "0.7.0"
 panic-probe = { version = "0.3" }
-rand = { version = "0.8.4", default-features = false }
 serde = { version = "1.0.136", default-features = false }
 rtos-trace = "0.1.3"
 systemview-target = { version = "0.1.2", features = ["callbacks-app", "callbacks-os", "log", "cortex-m"] }
diff --git a/examples/nrf52840/Cargo.toml b/examples/nrf52840/Cargo.toml
index 902193f3a..ff40a34af 100644
--- a/examples/nrf52840/Cargo.toml
+++ b/examples/nrf52840/Cargo.toml
@@ -25,7 +25,7 @@ static_cell = { version = "2" }
 cortex-m = { version = "0.7.6", features = ["inline-asm", "critical-section-single-core"] }
 cortex-m-rt = "0.7.0"
 panic-probe = { version = "0.3", features = ["print-defmt"] }
-rand = { version = "0.8.4", default-features = false }
+rand = { version = "0.9.0", default-features = false }
 embedded-storage = "0.3.1"
 usbd-hid = "0.8.1"
 serde = { version = "1.0.136", default-features = false }
diff --git a/examples/nrf52840/src/bin/rng.rs b/examples/nrf52840/src/bin/rng.rs
index 326054c9a..f32d17cd9 100644..100755
--- a/examples/nrf52840/src/bin/rng.rs
+++ b/examples/nrf52840/src/bin/rng.rs
@@ -22,7 +22,7 @@ async fn main(_spawner: Spawner) {
     defmt::info!("Some random bytes: {:?}", bytes);
 
     // Sync API with `rand`
-    defmt::info!("A random number from 1 to 10: {:?}", rng.gen_range(1..=10));
+    defmt::info!("A random number from 1 to 10: {:?}", rng.random_range(1..=10));
 
     let mut bytes = [0; 1024];
     rng.fill_bytes(&mut bytes).await;
diff --git a/examples/nrf5340/Cargo.toml b/examples/nrf5340/Cargo.toml
index 459c43221..5c226695f 100644
--- a/examples/nrf5340/Cargo.toml
+++ b/examples/nrf5340/Cargo.toml
@@ -21,7 +21,6 @@ static_cell = "2"
 cortex-m = { version = "0.7.6", features = ["inline-asm", "critical-section-single-core"] }
 cortex-m-rt = "0.7.0"
 panic-probe = { version = "0.3", features = ["print-defmt"] }
-rand = { version = "0.8.4", default-features = false }
 embedded-storage = "0.3.1"
 usbd-hid = "0.8.1"
 serde = { version = "1.0.136", default-features = false }
diff --git a/examples/rp/Cargo.toml b/examples/rp/Cargo.toml
index 45ca30e4c..aacf9846a 100644
--- a/examples/rp/Cargo.toml
+++ b/examples/rp/Cargo.toml
@@ -45,7 +45,6 @@ byte-slice-cast = { version = "1.2.0", default-features = false }
 smart-leds = "0.4.0"
 heapless = "0.8"
 usbd-hid = "0.8.1"
-rand_core = "0.6.4"
 
 embedded-hal-1 = { package = "embedded-hal", version = "1.0" }
 embedded-hal-async = "1.0"
@@ -55,7 +54,7 @@ embedded-storage = { version = "0.3" }
 static_cell = "2.1"
 portable-atomic = { version = "1.5", features = ["critical-section"] }
 log = "0.4"
-rand = { version = "0.8.5", default-features = false }
+rand = { version = "0.9.0", default-features = false }
 embedded-sdmmc = "0.7.0"
 
 [profile.release]
diff --git a/examples/rp/src/bin/ethernet_w5500_icmp.rs b/examples/rp/src/bin/ethernet_w5500_icmp.rs
index 5c42b2dde..e434b3bbc 100644
--- a/examples/rp/src/bin/ethernet_w5500_icmp.rs
+++ b/examples/rp/src/bin/ethernet_w5500_icmp.rs
@@ -21,7 +21,6 @@ use embassy_rp::peripherals::SPI0;
 use embassy_rp::spi::{Async, Config as SpiConfig, Spi};
 use embassy_time::{Delay, Instant, Timer};
 use embedded_hal_bus::spi::ExclusiveDevice;
-use rand::RngCore;
 use static_cell::StaticCell;
 use {defmt_rtt as _, panic_probe as _};
 
diff --git a/examples/rp/src/bin/ethernet_w5500_icmp_ping.rs b/examples/rp/src/bin/ethernet_w5500_icmp_ping.rs
index 0724311f9..0ec594fd5 100644
--- a/examples/rp/src/bin/ethernet_w5500_icmp_ping.rs
+++ b/examples/rp/src/bin/ethernet_w5500_icmp_ping.rs
@@ -23,7 +23,6 @@ use embassy_rp::peripherals::SPI0;
 use embassy_rp::spi::{Async, Config as SpiConfig, Spi};
 use embassy_time::{Delay, Duration};
 use embedded_hal_bus::spi::ExclusiveDevice;
-use rand::RngCore;
 use static_cell::StaticCell;
 use {defmt_rtt as _, panic_probe as _};
 
diff --git a/examples/rp/src/bin/ethernet_w5500_multisocket.rs b/examples/rp/src/bin/ethernet_w5500_multisocket.rs
index 2bea9fc9d..27e2f3c30 100644
--- a/examples/rp/src/bin/ethernet_w5500_multisocket.rs
+++ b/examples/rp/src/bin/ethernet_w5500_multisocket.rs
@@ -18,7 +18,6 @@ use embassy_rp::spi::{Async, Config as SpiConfig, Spi};
 use embassy_time::{Delay, Duration};
 use embedded_hal_bus::spi::ExclusiveDevice;
 use embedded_io_async::Write;
-use rand::RngCore;
 use static_cell::StaticCell;
 use {defmt_rtt as _, panic_probe as _};
 
diff --git a/examples/rp/src/bin/ethernet_w5500_tcp_client.rs b/examples/rp/src/bin/ethernet_w5500_tcp_client.rs
index 78d1b0b83..ba82f2a60 100644
--- a/examples/rp/src/bin/ethernet_w5500_tcp_client.rs
+++ b/examples/rp/src/bin/ethernet_w5500_tcp_client.rs
@@ -20,7 +20,6 @@ use embassy_rp::spi::{Async, Config as SpiConfig, Spi};
 use embassy_time::{Delay, Duration, Timer};
 use embedded_hal_bus::spi::ExclusiveDevice;
 use embedded_io_async::Write;
-use rand::RngCore;
 use static_cell::StaticCell;
 use {defmt_rtt as _, panic_probe as _};
 
diff --git a/examples/rp/src/bin/ethernet_w5500_tcp_server.rs b/examples/rp/src/bin/ethernet_w5500_tcp_server.rs
index 25a38c714..5c56dcafa 100644
--- a/examples/rp/src/bin/ethernet_w5500_tcp_server.rs
+++ b/examples/rp/src/bin/ethernet_w5500_tcp_server.rs
@@ -19,7 +19,6 @@ use embassy_rp::spi::{Async, Config as SpiConfig, Spi};
 use embassy_time::{Delay, Duration};
 use embedded_hal_bus::spi::ExclusiveDevice;
 use embedded_io_async::Write;
-use rand::RngCore;
 use static_cell::StaticCell;
 use {defmt_rtt as _, panic_probe as _};
 
diff --git a/examples/rp/src/bin/ethernet_w5500_udp.rs b/examples/rp/src/bin/ethernet_w5500_udp.rs
index 683e29222..c5fc8de1d 100644
--- a/examples/rp/src/bin/ethernet_w5500_udp.rs
+++ b/examples/rp/src/bin/ethernet_w5500_udp.rs
@@ -18,7 +18,6 @@ use embassy_rp::peripherals::SPI0;
 use embassy_rp::spi::{Async, Config as SpiConfig, Spi};
 use embassy_time::Delay;
 use embedded_hal_bus::spi::ExclusiveDevice;
-use rand::RngCore;
 use static_cell::StaticCell;
 use {defmt_rtt as _, panic_probe as _};
 
diff --git a/examples/rp/src/bin/orchestrate_tasks.rs b/examples/rp/src/bin/orchestrate_tasks.rs
index 5e2775793..c35679251 100644
--- a/examples/rp/src/bin/orchestrate_tasks.rs
+++ b/examples/rp/src/bin/orchestrate_tasks.rs
@@ -29,7 +29,6 @@ use embassy_sync::blocking_mutex::raw::CriticalSectionRawMutex;
 use embassy_sync::mutex::Mutex;
 use embassy_sync::{channel, signal};
 use embassy_time::{Duration, Timer};
-use rand::RngCore;
 use {defmt_rtt as _, panic_probe as _};
 
 // Hardware resource assignment. See other examples for different ways of doing this.
diff --git a/examples/rp/src/bin/sharing.rs b/examples/rp/src/bin/sharing.rs
index 497c4f845..856be6ace 100644
--- a/examples/rp/src/bin/sharing.rs
+++ b/examples/rp/src/bin/sharing.rs
@@ -27,7 +27,6 @@ use embassy_rp::{bind_interrupts, interrupt};
 use embassy_sync::blocking_mutex::raw::CriticalSectionRawMutex;
 use embassy_sync::{blocking_mutex, mutex};
 use embassy_time::{Duration, Ticker};
-use rand::RngCore;
 use static_cell::{ConstStaticCell, StaticCell};
 use {defmt_rtt as _, panic_probe as _};
 
diff --git a/examples/rp/src/bin/spi_gc9a01.rs b/examples/rp/src/bin/spi_gc9a01.rs
index 30afc253d..fdef09d4b 100644
--- a/examples/rp/src/bin/spi_gc9a01.rs
+++ b/examples/rp/src/bin/spi_gc9a01.rs
@@ -26,7 +26,6 @@ use embedded_graphics::primitives::{PrimitiveStyleBuilder, Rectangle};
 use mipidsi::models::GC9A01;
 use mipidsi::options::{ColorInversion, ColorOrder};
 use mipidsi::Builder;
-use rand_core::RngCore;
 use {defmt_rtt as _, panic_probe as _};
 
 const DISPLAY_FREQ: u32 = 64_000_000;
diff --git a/examples/rp/src/bin/usb_ethernet.rs b/examples/rp/src/bin/usb_ethernet.rs
index 2add20bc6..171f21a75 100644
--- a/examples/rp/src/bin/usb_ethernet.rs
+++ b/examples/rp/src/bin/usb_ethernet.rs
@@ -17,7 +17,6 @@ use embassy_usb::class::cdc_ncm::embassy_net::{Device, Runner, State as NetState
 use embassy_usb::class::cdc_ncm::{CdcNcmClass, State};
 use embassy_usb::{Builder, Config, UsbDevice};
 use embedded_io_async::Write;
-use rand::RngCore;
 use static_cell::StaticCell;
 use {defmt_rtt as _, panic_probe as _};
 
diff --git a/examples/rp/src/bin/usb_hid_mouse.rs b/examples/rp/src/bin/usb_hid_mouse.rs
index 5ee650910..4454c593c 100644..100755
--- a/examples/rp/src/bin/usb_hid_mouse.rs
+++ b/examples/rp/src/bin/usb_hid_mouse.rs
@@ -85,8 +85,8 @@ async fn main(_spawner: Spawner) {
             _ = Timer::after_secs(1).await;
             let report = MouseReport {
                 buttons: 0,
-                x: rng.gen_range(-100..100), // random small x movement
-                y: rng.gen_range(-100..100), // random small y movement
+                x: rng.random_range(-100..100), // random small x movement
+                y: rng.random_range(-100..100), // random small y movement
                 wheel: 0,
                 pan: 0,
             };
diff --git a/examples/rp/src/bin/wifi_ap_tcp_server.rs b/examples/rp/src/bin/wifi_ap_tcp_server.rs
index e97ddb4c1..856838a8c 100644
--- a/examples/rp/src/bin/wifi_ap_tcp_server.rs
+++ b/examples/rp/src/bin/wifi_ap_tcp_server.rs
@@ -19,7 +19,6 @@ use embassy_rp::peripherals::{DMA_CH0, PIO0};
 use embassy_rp::pio::{InterruptHandler, Pio};
 use embassy_time::Duration;
 use embedded_io_async::Write;
-use rand::RngCore;
 use static_cell::StaticCell;
 use {defmt_rtt as _, panic_probe as _};
 
diff --git a/examples/rp/src/bin/wifi_tcp_server.rs b/examples/rp/src/bin/wifi_tcp_server.rs
index 7e3c663fe..fbc957e0e 100644
--- a/examples/rp/src/bin/wifi_tcp_server.rs
+++ b/examples/rp/src/bin/wifi_tcp_server.rs
@@ -20,7 +20,6 @@ use embassy_rp::peripherals::{DMA_CH0, PIO0};
 use embassy_rp::pio::{InterruptHandler, Pio};
 use embassy_time::{Duration, Timer};
 use embedded_io_async::Write;
-use rand::RngCore;
 use static_cell::StaticCell;
 use {defmt_rtt as _, panic_probe as _};
 
diff --git a/examples/rp/src/bin/wifi_webrequest.rs b/examples/rp/src/bin/wifi_webrequest.rs
index f1b398b65..1efd1cd28 100644
--- a/examples/rp/src/bin/wifi_webrequest.rs
+++ b/examples/rp/src/bin/wifi_webrequest.rs
@@ -20,7 +20,6 @@ use embassy_rp::gpio::{Level, Output};
 use embassy_rp::peripherals::{DMA_CH0, PIO0};
 use embassy_rp::pio::{InterruptHandler, Pio};
 use embassy_time::{Duration, Timer};
-use rand::RngCore;
 use reqwless::client::{HttpClient, TlsConfig, TlsVerify};
 use reqwless::request::Method;
 use serde::Deserialize;
diff --git a/examples/rp235x/Cargo.toml b/examples/rp235x/Cargo.toml
index 345a915af..a247bc619 100644
--- a/examples/rp235x/Cargo.toml
+++ b/examples/rp235x/Cargo.toml
@@ -55,7 +55,6 @@ embedded-storage = { version = "0.3" }
 static_cell = "2.1"
 portable-atomic = { version = "1.5", features = ["critical-section"] }
 log = "0.4"
-rand = { version = "0.8.5", default-features = false }
 embedded-sdmmc = "0.7.0"
 
 [profile.release]
diff --git a/examples/rp235x/src/bin/sharing.rs b/examples/rp235x/src/bin/sharing.rs
index 497c4f845..856be6ace 100644
--- a/examples/rp235x/src/bin/sharing.rs
+++ b/examples/rp235x/src/bin/sharing.rs
@@ -27,7 +27,6 @@ use embassy_rp::{bind_interrupts, interrupt};
 use embassy_sync::blocking_mutex::raw::CriticalSectionRawMutex;
 use embassy_sync::{blocking_mutex, mutex};
 use embassy_time::{Duration, Ticker};
-use rand::RngCore;
 use static_cell::{ConstStaticCell, StaticCell};
 use {defmt_rtt as _, panic_probe as _};
 
diff --git a/examples/rp235x/src/bin/trng.rs b/examples/rp235x/src/bin/trng.rs
index ad19aef3e..100d6b104 100644
--- a/examples/rp235x/src/bin/trng.rs
+++ b/examples/rp235x/src/bin/trng.rs
@@ -10,7 +10,6 @@ use embassy_rp::gpio::{Level, Output};
 use embassy_rp::peripherals::TRNG;
 use embassy_rp::trng::Trng;
 use embassy_time::Timer;
-use rand::RngCore;
 use {defmt_rtt as _, panic_probe as _};
 
 bind_interrupts!(struct Irqs {
@@ -33,8 +32,8 @@ async fn main(_spawner: Spawner) {
         info!("Random bytes async {}", &randomness);
         trng.blocking_fill_bytes(&mut randomness);
         info!("Random bytes blocking {}", &randomness);
-        let random_u32 = trng.next_u32();
-        let random_u64 = trng.next_u64();
+        let random_u32 = trng.blocking_next_u32();
+        let random_u64 = trng.blocking_next_u64();
         info!("Random u32 {} u64 {}", random_u32, random_u64);
         // Random number of blinks between 0 and 31
         let blinks = random_u32 % 32;
diff --git a/examples/std/Cargo.toml b/examples/std/Cargo.toml
index f00953167..ff4b2fbbd 100644
--- a/examples/std/Cargo.toml
+++ b/examples/std/Cargo.toml
@@ -21,7 +21,7 @@ futures = { version = "0.3.17" }
 log = "0.4.14"
 nix = "0.26.2"
 clap = { version = "3.0.0-beta.5", features = ["derive"] }
-rand_core = { version = "0.6.3", features = ["std"] }
+rand_core = { version = "0.9.1", features = ["std", "os_rng"] }
 heapless = { version = "0.8", default-features = false }
 static_cell = "2"
 
diff --git a/examples/std/src/bin/net.rs b/examples/std/src/bin/net.rs
index 6e50b1a01..232cf494b 100644
--- a/examples/std/src/bin/net.rs
+++ b/examples/std/src/bin/net.rs
@@ -9,7 +9,7 @@ use embassy_time::Duration;
 use embedded_io_async::Write;
 use heapless::Vec;
 use log::*;
-use rand_core::{OsRng, RngCore};
+use rand_core::{OsRng, TryRngCore};
 use static_cell::StaticCell;
 
 #[derive(Parser)]
@@ -48,7 +48,7 @@ async fn main_task(spawner: Spawner) {
 
     // Generate random seed
     let mut seed = [0; 8];
-    OsRng.fill_bytes(&mut seed);
+    OsRng.try_fill_bytes(&mut seed).unwrap();
     let seed = u64::from_le_bytes(seed);
 
     // Init network stack
diff --git a/examples/std/src/bin/net_dns.rs b/examples/std/src/bin/net_dns.rs
index a42c5dbb7..cf90731dd 100644
--- a/examples/std/src/bin/net_dns.rs
+++ b/examples/std/src/bin/net_dns.rs
@@ -5,7 +5,7 @@ use embassy_net::{Config, Ipv4Address, Ipv4Cidr, StackResources};
 use embassy_net_tuntap::TunTapDevice;
 use heapless::Vec;
 use log::*;
-use rand_core::{OsRng, RngCore};
+use rand_core::{OsRng, TryRngCore};
 use static_cell::StaticCell;
 
 #[derive(Parser)]
@@ -45,7 +45,7 @@ async fn main_task(spawner: Spawner) {
 
     // Generate random seed
     let mut seed = [0; 8];
-    OsRng.fill_bytes(&mut seed);
+    OsRng.try_fill_bytes(&mut seed).unwrap();
     let seed = u64::from_le_bytes(seed);
 
     // Init network stack
diff --git a/examples/std/src/bin/net_ppp.rs b/examples/std/src/bin/net_ppp.rs
index f667e8d4c..ac3aea6ff 100644
--- a/examples/std/src/bin/net_ppp.rs
+++ b/examples/std/src/bin/net_ppp.rs
@@ -23,7 +23,7 @@ use futures::io::BufReader;
 use heapless::Vec;
 use log::*;
 use nix::sys::termios;
-use rand_core::{OsRng, RngCore};
+use rand_core::{OsRng, TryRngCore};
 use static_cell::StaticCell;
 
 use crate::serial_port::SerialPort;
@@ -89,7 +89,7 @@ async fn main_task(spawner: Spawner) {
 
     // Generate random seed
     let mut seed = [0; 8];
-    OsRng.fill_bytes(&mut seed);
+    OsRng.try_fill_bytes(&mut seed).unwrap();
     let seed = u64::from_le_bytes(seed);
 
     // Init network stack
diff --git a/examples/std/src/bin/net_udp.rs b/examples/std/src/bin/net_udp.rs
index 02d4d3efb..53632a5b4 100644
--- a/examples/std/src/bin/net_udp.rs
+++ b/examples/std/src/bin/net_udp.rs
@@ -5,7 +5,7 @@ use embassy_net::{Config, Ipv4Address, Ipv4Cidr, StackResources};
 use embassy_net_tuntap::TunTapDevice;
 use heapless::Vec;
 use log::*;
-use rand_core::{OsRng, RngCore};
+use rand_core::{OsRng, TryRngCore};
 use static_cell::StaticCell;
 
 #[derive(Parser)]
@@ -44,7 +44,7 @@ async fn main_task(spawner: Spawner) {
 
     // Generate random seed
     let mut seed = [0; 8];
-    OsRng.fill_bytes(&mut seed);
+    OsRng.try_fill_bytes(&mut seed).unwrap();
     let seed = u64::from_le_bytes(seed);
 
     // Init network stack
diff --git a/examples/std/src/bin/tcp_accept.rs b/examples/std/src/bin/tcp_accept.rs
index 18646a083..961c20e2d 100644
--- a/examples/std/src/bin/tcp_accept.rs
+++ b/examples/std/src/bin/tcp_accept.rs
@@ -7,7 +7,7 @@ use embassy_time::{Duration, Timer};
 use embedded_io_async::Write as _;
 use heapless::Vec;
 use log::*;
-use rand_core::{OsRng, RngCore};
+use rand_core::{OsRng, TryRngCore};
 use static_cell::StaticCell;
 
 #[derive(Parser)]
@@ -46,7 +46,7 @@ async fn main_task(spawner: Spawner) {
 
     // Generate random seed
     let mut seed = [0; 8];
-    OsRng.fill_bytes(&mut seed);
+    OsRng.try_fill_bytes(&mut seed).unwrap();
     let seed = u64::from_le_bytes(seed);
 
     // Init network stack
diff --git a/examples/stm32f7/Cargo.toml b/examples/stm32f7/Cargo.toml
index 1a46931d9..94e0a80eb 100644
--- a/examples/stm32f7/Cargo.toml
+++ b/examples/stm32f7/Cargo.toml
@@ -24,7 +24,6 @@ embedded-hal = "0.2.6"
 panic-probe = { version = "0.3", features = ["print-defmt"] }
 heapless = { version = "0.8", default-features = false }
 nb = "1.0.0"
-rand_core = "0.6.3"
 critical-section = "1.1"
 embedded-storage = "0.3.1"
 static_cell = "2"
diff --git a/examples/stm32f7/src/bin/eth.rs b/examples/stm32f7/src/bin/eth.rs
index 17ab7fc00..67a2b34bb 100644
--- a/examples/stm32f7/src/bin/eth.rs
+++ b/examples/stm32f7/src/bin/eth.rs
@@ -12,7 +12,6 @@ use embassy_stm32::time::Hertz;
 use embassy_stm32::{bind_interrupts, eth, peripherals, rng, Config};
 use embassy_time::Timer;
 use embedded_io_async::Write;
-use rand_core::RngCore;
 use static_cell::StaticCell;
 use {defmt_rtt as _, panic_probe as _};
 
diff --git a/examples/stm32h5/Cargo.toml b/examples/stm32h5/Cargo.toml
index 5631ff746..6fb14f422 100644
--- a/examples/stm32h5/Cargo.toml
+++ b/examples/stm32h5/Cargo.toml
@@ -26,7 +26,6 @@ embedded-io-async = { version = "0.6.1" }
 embedded-nal-async = "0.8.0"
 panic-probe = { version = "0.3", features = ["print-defmt"] }
 heapless = { version = "0.8", default-features = false }
-rand_core = "0.6.3"
 critical-section = "1.1"
 micromath = "2.0.0"
 stm32-fmc = "0.3.0"
diff --git a/examples/stm32h5/src/bin/eth.rs b/examples/stm32h5/src/bin/eth.rs
index 4034b552c..1d85cc1e7 100644
--- a/examples/stm32h5/src/bin/eth.rs
+++ b/examples/stm32h5/src/bin/eth.rs
@@ -15,7 +15,6 @@ use embassy_stm32::time::Hertz;
 use embassy_stm32::{bind_interrupts, eth, peripherals, rng, Config};
 use embassy_time::Timer;
 use embedded_io_async::Write;
-use rand_core::RngCore;
 use static_cell::StaticCell;
 use {defmt_rtt as _, panic_probe as _};
 
diff --git a/examples/stm32h7/Cargo.toml b/examples/stm32h7/Cargo.toml
index 2f98542bb..5035dacae 100644
--- a/examples/stm32h7/Cargo.toml
+++ b/examples/stm32h7/Cargo.toml
@@ -27,7 +27,6 @@ embedded-nal-async = "0.8.0"
 embedded-io-async = { version = "0.6.1" }
 panic-probe = { version = "0.3", features = ["print-defmt"] }
 heapless = { version = "0.8", default-features = false }
-rand_core = "0.6.3"
 critical-section = "1.1"
 micromath = "2.0.0"
 stm32-fmc = "0.3.0"
diff --git a/examples/stm32h7/src/bin/eth.rs b/examples/stm32h7/src/bin/eth.rs
index da7aa4af5..fc14c1a70 100644
--- a/examples/stm32h7/src/bin/eth.rs
+++ b/examples/stm32h7/src/bin/eth.rs
@@ -11,7 +11,6 @@ use embassy_stm32::rng::Rng;
 use embassy_stm32::{bind_interrupts, eth, peripherals, rng, Config};
 use embassy_time::Timer;
 use embedded_io_async::Write;
-use rand_core::RngCore;
 use static_cell::StaticCell;
 use {defmt_rtt as _, panic_probe as _};
 
diff --git a/examples/stm32h7/src/bin/eth_client.rs b/examples/stm32h7/src/bin/eth_client.rs
index 10485109a..46301a478 100644
--- a/examples/stm32h7/src/bin/eth_client.rs
+++ b/examples/stm32h7/src/bin/eth_client.rs
@@ -14,7 +14,6 @@ use embassy_stm32::{bind_interrupts, eth, peripherals, rng, Config};
 use embassy_time::Timer;
 use embedded_io_async::Write;
 use embedded_nal_async::TcpConnect;
-use rand_core::RngCore;
 use static_cell::StaticCell;
 use {defmt_rtt as _, panic_probe as _};
 
diff --git a/examples/stm32h7/src/bin/eth_client_mii.rs b/examples/stm32h7/src/bin/eth_client_mii.rs
index 849173615..99cd1a158 100644
--- a/examples/stm32h7/src/bin/eth_client_mii.rs
+++ b/examples/stm32h7/src/bin/eth_client_mii.rs
@@ -14,7 +14,6 @@ use embassy_stm32::{bind_interrupts, eth, peripherals, rng, Config};
 use embassy_time::Timer;
 use embedded_io_async::Write;
 use embedded_nal_async::TcpConnect;
-use rand_core::RngCore;
 use static_cell::StaticCell;
 use {defmt_rtt as _, panic_probe as _};
 
diff --git a/examples/stm32h723/Cargo.toml b/examples/stm32h723/Cargo.toml
index 749fd78ae..f07d360b3 100644
--- a/examples/stm32h723/Cargo.toml
+++ b/examples/stm32h723/Cargo.toml
@@ -24,7 +24,6 @@ embedded-nal-async = "0.8.0"
 embedded-io-async = { version = "0.6.1" }
 panic-probe = { version = "0.3", features = ["print-defmt"] }
 heapless = { version = "0.8", default-features = false }
-rand_core = "0.6.3"
 critical-section = "1.1"
 static_cell = "2"
 chrono = { version = "^0.4", default-features = false }
diff --git a/examples/stm32h742/Cargo.toml b/examples/stm32h742/Cargo.toml
index e2e0094b8..3f936193c 100644
--- a/examples/stm32h742/Cargo.toml
+++ b/examples/stm32h742/Cargo.toml
@@ -51,7 +51,6 @@ embedded-hal = "0.2.6"
 panic-probe = { version = "0.3", features = ["print-defmt"] }
 heapless = { version = "0.8", default-features = false }
 nb = "1.0.0"
-rand_core = "0.6.3"
 critical-section = "1.1"
 embedded-storage = "0.3.1"
 static_cell = "2"
diff --git a/examples/stm32h755cm4/Cargo.toml b/examples/stm32h755cm4/Cargo.toml
index 7c17bc766..c186ef19f 100644
--- a/examples/stm32h755cm4/Cargo.toml
+++ b/examples/stm32h755cm4/Cargo.toml
@@ -27,7 +27,6 @@ embedded-nal-async = "0.8.0"
 embedded-io-async = { version = "0.6.1" }
 panic-probe = { version = "0.3", features = ["print-defmt"] }
 heapless = { version = "0.8", default-features = false }
-rand_core = "0.6.3"
 critical-section = "1.1"
 micromath = "2.0.0"
 stm32-fmc = "0.3.0"
diff --git a/examples/stm32h755cm7/Cargo.toml b/examples/stm32h755cm7/Cargo.toml
index 3186929a8..d37978e44 100644
--- a/examples/stm32h755cm7/Cargo.toml
+++ b/examples/stm32h755cm7/Cargo.toml
@@ -27,7 +27,6 @@ embedded-nal-async = "0.8.0"
 embedded-io-async = { version = "0.6.1" }
 panic-probe = { version = "0.3", features = ["print-defmt"] }
 heapless = { version = "0.8", default-features = false }
-rand_core = "0.6.3"
 critical-section = "1.1"
 micromath = "2.0.0"
 stm32-fmc = "0.3.0"
diff --git a/examples/stm32h7b0/Cargo.toml b/examples/stm32h7b0/Cargo.toml
index e5f2dfe86..dc8ecc684 100644
--- a/examples/stm32h7b0/Cargo.toml
+++ b/examples/stm32h7b0/Cargo.toml
@@ -26,7 +26,6 @@ embedded-nal-async = "0.8.0"
 embedded-io-async = { version = "0.6.1" }
 panic-probe = { version = "0.3", features = ["print-defmt"] }
 heapless = { version = "0.8", default-features = false }
-rand_core = "0.6.3"
 critical-section = "1.1"
 micromath = "2.0.0"
 stm32-fmc = "0.3.0"
diff --git a/examples/stm32h7rs/Cargo.toml b/examples/stm32h7rs/Cargo.toml
index 22d59be04..aee2703a1 100644
--- a/examples/stm32h7rs/Cargo.toml
+++ b/examples/stm32h7rs/Cargo.toml
@@ -26,7 +26,6 @@ embedded-nal-async = "0.8.0"
 embedded-io-async = { version = "0.6.1" }
 panic-probe = { version = "0.3", features = ["print-defmt"] }
 heapless = { version = "0.8", default-features = false }
-rand_core = "0.6.3"
 critical-section = "1.1"
 micromath = "2.0.0"
 stm32-fmc = "0.3.0"
diff --git a/examples/stm32h7rs/src/bin/eth.rs b/examples/stm32h7rs/src/bin/eth.rs
index f2bd9575e..6d246bb09 100644
--- a/examples/stm32h7rs/src/bin/eth.rs
+++ b/examples/stm32h7rs/src/bin/eth.rs
@@ -11,7 +11,6 @@ use embassy_stm32::rng::Rng;
 use embassy_stm32::{bind_interrupts, eth, peripherals, rng, Config};
 use embassy_time::Timer;
 use heapless::Vec;
-use rand_core::RngCore;
 use static_cell::StaticCell;
 use {defmt_rtt as _, panic_probe as _};
 
diff --git a/examples/stm32l4/Cargo.toml b/examples/stm32l4/Cargo.toml
index 239bfcd79..cceec86dd 100644
--- a/examples/stm32l4/Cargo.toml
+++ b/examples/stm32l4/Cargo.toml
@@ -30,7 +30,6 @@ embedded-hal-bus = { version = "0.1", features = ["async"] }
 panic-probe = { version = "0.3", features = ["print-defmt"] }
 heapless = { version = "0.8", default-features = false }
 chrono = { version = "^0.4", default-features = false }
-rand = { version = "0.8.5", default-features = false }
 static_cell = "2"
 
 micromath = "2.0.0"
diff --git a/examples/stm32l4/src/bin/spe_adin1110_http_server.rs b/examples/stm32l4/src/bin/spe_adin1110_http_server.rs
index 4a7c01f9f..354ac90b2 100644
--- a/examples/stm32l4/src/bin/spe_adin1110_http_server.rs
+++ b/examples/stm32l4/src/bin/spe_adin1110_http_server.rs
@@ -38,7 +38,6 @@ use embedded_io::Write as bWrite;
 use embedded_io_async::Write;
 use heapless::Vec;
 use panic_probe as _;
-use rand::RngCore;
 use static_cell::StaticCell;
 
 bind_interrupts!(struct Irqs {
diff --git a/examples/stm32l5/Cargo.toml b/examples/stm32l5/Cargo.toml
index 4c372a554..6962db7ea 100644
--- a/examples/stm32l5/Cargo.toml
+++ b/examples/stm32l5/Cargo.toml
@@ -23,7 +23,6 @@ cortex-m = { version = "0.7.6", features = ["inline-asm", "critical-section-sing
 cortex-m-rt = "0.7.0"
 embedded-hal = "0.2.6"
 heapless = { version = "0.8", default-features = false }
-rand_core = { version = "0.6.3", default-features = false }
 embedded-io-async = { version = "0.6.1" }
 static_cell = "2"
 
diff --git a/examples/stm32l5/src/bin/usb_ethernet.rs b/examples/stm32l5/src/bin/usb_ethernet.rs
index 809ec6ab1..6c72132c6 100644
--- a/examples/stm32l5/src/bin/usb_ethernet.rs
+++ b/examples/stm32l5/src/bin/usb_ethernet.rs
@@ -12,7 +12,6 @@ use embassy_usb::class::cdc_ncm::embassy_net::{Device, Runner, State as NetState
 use embassy_usb::class::cdc_ncm::{CdcNcmClass, State};
 use embassy_usb::{Builder, UsbDevice};
 use embedded_io_async::Write;
-use rand_core::RngCore;
 use static_cell::StaticCell;
 use {defmt_rtt as _, panic_probe as _};
 
diff --git a/tests/rp/Cargo.toml b/tests/rp/Cargo.toml
index 1335aa84b..46dc820ab 100644
--- a/tests/rp/Cargo.toml
+++ b/tests/rp/Cargo.toml
@@ -38,7 +38,6 @@ embedded-io-async = { version = "0.6.1" }
 embedded-storage = { version = "0.3" }
 static_cell = "2"
 portable-atomic = { version = "1.5", features = ["critical-section"] }
-rand = { version = "0.8.5", default-features = false }
 
 # bootsel not currently supported on 2350
 [[bin]]
diff --git a/tests/rp/src/bin/ethernet_w5100s_perf.rs b/tests/rp/src/bin/ethernet_w5100s_perf.rs
index ae2adfa55..89e0ad32e 100644
--- a/tests/rp/src/bin/ethernet_w5100s_perf.rs
+++ b/tests/rp/src/bin/ethernet_w5100s_perf.rs
@@ -14,7 +14,6 @@ use embassy_rp::peripherals::SPI0;
 use embassy_rp::spi::{Async, Config as SpiConfig, Spi};
 use embassy_time::Delay;
 use embedded_hal_bus::spi::ExclusiveDevice;
-use rand::RngCore;
 use static_cell::StaticCell;
 use {defmt_rtt as _, panic_probe as _};
 
diff --git a/tests/stm32/Cargo.toml b/tests/stm32/Cargo.toml
index 3a347e279..b230e619e 100644
--- a/tests/stm32/Cargo.toml
+++ b/tests/stm32/Cargo.toml
@@ -81,8 +81,8 @@ embedded-hal-async = { version = "1.0" }
 embedded-can = { version = "0.4" }
 micromath = "2.0.0"
 panic-probe = { version = "0.3.0", features = ["print-defmt"] }
-rand_core = { version = "0.6", default-features = false }
-rand_chacha = { version = "0.3", default-features = false }
+rand_core = { version = "0.9.1", default-features = false }
+rand_chacha = { version = "0.9.0", default-features = false }
 static_cell = "2"
 portable-atomic = { version = "1.5", features = [] }
 
diff --git a/tests/stm32/src/bin/eth.rs b/tests/stm32/src/bin/eth.rs
index a7e76fd8e..bcb362b42 100644
--- a/tests/stm32/src/bin/eth.rs
+++ b/tests/stm32/src/bin/eth.rs
@@ -11,7 +11,6 @@ use embassy_stm32::eth::{Ethernet, GenericPhy, PacketQueue};
 use embassy_stm32::peripherals::ETH;
 use embassy_stm32::rng::Rng;
 use embassy_stm32::{bind_interrupts, eth, peripherals, rng};
-use rand_core::RngCore;
 use static_cell::StaticCell;
 use {defmt_rtt as _, panic_probe as _};
 
diff --git a/tests/utils/Cargo.toml b/tests/utils/Cargo.toml
index 7b54a4f52..bda55ad32 100644
--- a/tests/utils/Cargo.toml
+++ b/tests/utils/Cargo.toml
@@ -4,5 +4,5 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-rand = "0.8"
+rand = "0.9"
 serial = "0.4"