diff --git a/scripts/publish.sh b/scripts/publish.sh
index fb8c2c7..5dce66f 100755
--- a/scripts/publish.sh
+++ b/scripts/publish.sh
@@ -34,7 +34,8 @@ if [[ -n "$1" ]]; then
   fi
 fi
 
-if [[ "$(yarn --version)" =~ "^1" ]]; then
+YARN_VERSIN="$(yarn --version)"
+if [[ "$YARN_VERSION" =~ "^1" ]]; then
   echo "Warning: Detected Yarn Classic. This action officially supports Yarn v3 and newer. Older versions may break in future versions." >&2
   npm_config__auth="$YARN_NPM_AUTH_TOKEN" yarn publish --tag "$PUBLISH_NPM_TAG"
 else