diff --git a/lint-backend/action.yml b/lint-backend/action.yml
index ea6d92a..da154d4 100644
--- a/lint-backend/action.yml
+++ b/lint-backend/action.yml
@@ -6,4 +6,5 @@ runs:
   steps:
     - uses: psf/black@22.12.0
       with:
+        version: "22.12.0"
         src: backend