1 files changed, 3 insertions, 1 deletions

diff --git a/docs/examples/layer-by-layer/blinky-irq/Cargo.toml b/docs/examples/layer-by-layer/blinky-irq/Cargo.toml
index 04ffc23ba..8733ee894 100644
--- a/docs/examples/layer-by-layer/blinky-irq/Cargo.toml
+++ b/docs/examples/layer-by-layer/blinky-irq/Cargo.toml
@@ -1,3 +1,5 @@
+[workspace]
+
 [package]
 name = "blinky-irq"
 version = "0.1.0"
@@ -5,7 +7,7 @@ edition = "2021"
 license = "MIT OR Apache-2.0"
 
 [dependencies]
-cortex-m = "0.7"
+cortex-m = { version = "0.7", features = ["critical-section-single-core"] }
 cortex-m-rt = { version = "0.7" }
 embassy-stm32 = { version = "0.2.0", path = "../../../../embassy-stm32", features = ["stm32l475vg", "memory-x", "unstable-pac"] }