diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 6297cd6..5d32c06 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -54,4 +54,4 @@ jobs:
       run: black . --check
     - name: Check if cog needs to be run
       run: |
-        cog --check README.md docs/*.rst
+        cog --check --diff README.md docs/*.rst