diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 18e586bd..08a28c47 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -120,8 +120,8 @@ jobs:
       - name: Test code formatting
         run: |
           cd sdl
-          v test-fmt
-          v fmt -verify .
+          VJOBS=1 v test-fmt
+          VJOBS=1 v fmt -verify .
 
       - name: Build sdl shared
         run: |