diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d22c2b7e03..affdf944a7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,6 +23,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
+      max-parallel: 5
       matrix:
         include:
           - id: ci-custom