diff --git a/.github/workflows/blockapi-ci.yml b/.github/workflows/blockapi-ci.yml
index 5a4046b..b731913 100644
--- a/.github/workflows/blockapi-ci.yml
+++ b/.github/workflows/blockapi-ci.yml
@@ -37,7 +37,7 @@ jobs:
           pip install .
 
       - name: Run Black
-        uses: psf/black@stable
+        uses: psf/black@24.1.1
 
       - name: Run unit tests
         run: |