diff --git a/.github/workflows/pythonpackage.yml b/.github/workflows/pythonpackage.yml
index e094378e..dc074928 100644
--- a/.github/workflows/pythonpackage.yml
+++ b/.github/workflows/pythonpackage.yml
@@ -4,7 +4,7 @@ on: [push, pull_request]
 
 jobs:
   build:
-    runs-on: [ubuntu-latest, windows-latest, macos-latest]
+    runs-on: [ubuntu-latest]
     strategy:
       max-parallel: 4
       matrix: