diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 8789fa29a2..5eaac368e7 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -15,6 +15,7 @@ jobs:
   cc:
     runs-on: ubuntu-20.04
     strategy:
+      max-parallel: 4
       matrix:
         bits: [ 32, 64 ]
         type: [ "static", "shared" ]