diff --git a/ci/script.sh b/ci/script.sh
index 5273f714..34e736c5 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 --edition=2021 foo $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