diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1eb5bc5c..9ee8ba46 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/).
 
 ## [Unreleased]
 
+- Force using rust edition 2021 in CI
+
 ## [v0.35.0] - 2024-11-12
 
 - Add `crate_path` setting
diff --git a/ci/script.sh b/ci/script.sh
index 3d71b080..6524bb60 100755
--- a/ci/script.sh
+++ b/ci/script.sh
@@ -39,7 +39,7 @@ main() {
     esac
 
     # test crate
-    cargo init --lib --name foo $td
+    cargo init --lib --name foo --edition 2021 $td
     echo 'cortex-m = "0.7.7"'    >> $td/Cargo.toml
     echo 'cortex-m-rt = "0.7.3"' >> $td/Cargo.toml
     echo 'vcell = "0.1.3"'       >> $td/Cargo.toml