diff --git a/.github/workflows/darker.yml b/.github/workflows/darker.yml
index 7c8d9f66..4a0a00ef 100644
--- a/.github/workflows/darker.yml
+++ b/.github/workflows/darker.yml
@@ -18,4 +18,4 @@ jobs:
           src: "."
           version: "~=1.7.0"
           lint: "flake8,pylint==2.13.1"
-          revision: "(git merge-base main HEAD)..."
+          revision: "origin/main..."