diff --git a/action.yml b/action.yml
index 95ecee99..1535c9c8 100644
--- a/action.yml
+++ b/action.yml
@@ -4,8 +4,8 @@ description: GitHub Action for installing development tools
 inputs:
   tool:
     description: Tools to install (whitespace or comma separated list)
-    required: true
-    # default: #publish:tool
+    required: false
+    default: parse-dockerfile
   checksum:
     description: Whether to enable checksums (strongly discouraged to disable)
     required: false