diff --git a/README.md b/README.md
index 1e618ec..9b67321 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ name: Deploy
 
 on:
   pull_request:
-    types: [open, synchronize]
+    types: [opened, synchronize]
   push:
     branches:
       - master