diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index a62f16036..c787ae2f0 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -35,6 +35,10 @@ jobs:
     - name: Prepare
       run: cp -R /orig .
 
+    - name: Diff
+      run: |
+        ninja diff
+
     # Build the project
     - name: Build
       run: |