diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index d27fb8cdc..67305c92c 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -4,7 +4,7 @@ name: Run all tests
 on:
   pull_request_target:
     paths:
-      - "*"
+      - "**.py"
 
 jobs: