diff --git a/.github/workflows/mypy.yml b/.github/workflows/mypy.yml
index c7309082..0764422d 100644
--- a/.github/workflows/mypy.yml
+++ b/.github/workflows/mypy.yml
@@ -1,7 +1,7 @@
 name: Type annotation
 
 on:
-  push:
+  pr:
     paths:
       - 'datalad_next/**.py'
       - '!**/tests/**.py'