diff --git a/.github/workflows/pr.yaml b/.github/workflows/pr.yaml
index 8cd0e87..dd7492d 100644
--- a/.github/workflows/pr.yaml
+++ b/.github/workflows/pr.yaml
@@ -7,10 +7,7 @@ on:
 
 jobs:
   build:
-    strategy:
-      matrix:
-        os: [ macos-11, windows-latest ]
-    runs-on: ${{matrix.os}}
+    runs-on: macos-11
     steps:
       - name: Checkout
         uses: actions/checkout@v2