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diff --git a/release/bump-dependency.sh b/release/bump-dependency.sh
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+#!/usr/bin/env bash
+# A helper script to bump version dependencies of a crate to a particular version. It does
+# not bump the version of the crate itself, only its entries in dependency lists.
+#
+# Usage (from the embassy repo folder): ./release/bump-dependency.sh embassy-time 0.4.0
+#
+# As a sanity check, after running this script, grep for old versions.
+#
+CRATE=$1
+TARGET_VER=$2
+find . -name "Cargo.toml" | xargs sed -rie "s/($CRATE = \{.*version = \")[0-9]+.[0-9]+.?[0-9]*(\".*)/\1$TARGET_VER\2/g"