diff --git a/action.yaml b/action.yaml
index a45baa0..0b02b1a 100644
--- a/action.yaml
+++ b/action.yaml
@@ -38,7 +38,7 @@ inputs:
   template-file:
     description: 'The template file to use'
     required: false
-    default: '/template/default.md'
+    default: '/template/default.tpl'
 runs:
   using: 'docker'
   image: 'Dockerfile'