diff --git a/.github/workflows/testsuite.yml b/.github/workflows/testsuite.yml
index 4fa6740f8..7f7490ae7 100644
--- a/.github/workflows/testsuite.yml
+++ b/.github/workflows/testsuite.yml
@@ -8,7 +8,11 @@ on:
     branches:
       - master
       - nedbat/*
+    paths:
+      - '**/*.py'
   pull_request:
+    paths:
+      - '**/*.py'
   workflow_dispatch:
 
 defaults: