diff --git a/action.yml b/action.yml
index cbd9d29..a6c26db 100644
--- a/action.yml
+++ b/action.yml
@@ -15,4 +15,4 @@ runs:
   using: docker
   image: Dockerfile
   env:
-    VERSIONS: ${{ inputs.versions }}
+    VERSION_LIST: "${{ inputs.versions }}"