diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 06054f06c..bdeecc85f 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -16,7 +16,7 @@ jobs:
     with:
       upload_to_pypi: false
   freeze:
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
     strategy:
       matrix:
         os: