diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index a91a8e87..5131ba88 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -46,7 +46,7 @@ jobs:
           python3 setup.py egg_info
       - name: Lint check
         run: |
-          cardboardlinter -n auto
+          cardboardlinter --refspec main -n auto
       - name: Unit tests
         run: nosetests tests --nocapture --processes=0 --process-timeout=20 --process-restartworker
       - name: Test scripts