diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index 2a6d50a..b38775f 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -13,7 +13,7 @@ jobs:
   build:
     name: Build and upload artefact
     strategy:
-      # max-parallel: 1
+      max-parallel: 1
       matrix:
         os: [macos-latest, macos-13]
         python-version: ["3.8", "3.9", "3.10", "3.11"]
@@ -107,7 +107,7 @@ jobs:
     name: Test the wheel
     needs: build
     strategy:
-      # max-parallel: 1
+      max-parallel: 1
       matrix:
         os: [macos-latest, macos-13]
         python-version: ["3.8", "3.9", "3.10", "3.11"]