diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 6119a4b..41175c0 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -22,7 +22,7 @@ jobs:
       #----------------------------------------------
       #          install and run linters
       #----------------------------------------------
-      - run: python -m pip install black flake8 isort
+      - run: python -m pip install black=23.11.0 flake8 isort
       - run: |
           flake8 .
           black . --check