diff --git a/.gitea/workflows/1.4-CTS.yml b/.gitea/workflows/1.4-CTS.yml
index fa9621a..29207a1 100644
--- a/.gitea/workflows/1.4-CTS.yml
+++ b/.gitea/workflows/1.4-CTS.yml
@@ -55,7 +55,7 @@ jobs:
         which deqp-runner && deqp-runner --version || echo "deqp-runner not found"
 
     - name: Run Vulkan CTS
-      run: zig build cts-soft -- --mustpass-list=master -j4
+      run: zig build cts-soft -- --mustpass-list=master -j1
       continue-on-error: true
 
     - name: Verify tests
diff --git a/.gitea/workflows/Test.yml b/.gitea/workflows/Test.yml
index 5dd3f48..94f124e 100644
--- a/.gitea/workflows/Test.yml
+++ b/.gitea/workflows/Test.yml
@@ -61,7 +61,7 @@ jobs:
         which deqp-runner && deqp-runner --version || echo "deqp-runner not found"
 
     - name: Run Vulkan CTS
-      run: zig build cts-soft -- -j4
+      run: zig build cts-soft -- -j1
       continue-on-error: true
 
     - name: Verify tests