diff --git a/action.yml b/action.yml
index fb9ef2f..8dfbd0e 100644
--- a/action.yml
+++ b/action.yml
@@ -28,11 +28,11 @@ inputs:
   s3-region:        { description: "AWS region", required: false, default: "us-east-1" }
 
 outputs:
-  version:           { description: "Resolved version string", value: ${{ steps.run.outputs.version }} }
-  app-name:          { description: "Resolved app name", value: ${{ steps.run.outputs.app-name }} }
-  artifact-path:     { description: "Local absolute path to the .app.zip", value: ${{ steps.run.outputs.artifact-path }} }
-  artifact-filename: { description: "Filename of the .app.zip", value: ${{ steps.run.outputs.artifact-filename }} }
-  s3-url:            { description: "s3://… URL if uploaded, else empty", value: ${{ steps.run.outputs.s3-url }} }
+  version:           { description: "Resolved version string", value: "${{ steps.run.outputs.version }}" }
+  app-name:          { description: "Resolved app name", value: "${{ steps.run.outputs.app-name }}" }
+  artifact-path:     { description: "Local absolute path to the .app.zip", value: "${{ steps.run.outputs.artifact-path }}" }
+  artifact-filename: { description: "Filename of the .app.zip", value: "${{ steps.run.outputs.artifact-filename }}" }
+  s3-url:            { description: "s3://… URL if uploaded, else empty", value: "${{ steps.run.outputs.s3-url }}" }
 
 runs:
   using: composite