diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index a0730966..8eb2c27f 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -11,7 +11,7 @@ on:
 jobs:
   build:
     strategy:
-      max-parallel: 6
+      max-parallel: 9
       fail-fast: true
       matrix:
         os: