diff --git a/.github/workflows/pr_tests.yml b/.github/workflows/pr_tests.yml
index a08d2e0..9688f38 100644
--- a/.github/workflows/pr_tests.yml
+++ b/.github/workflows/pr_tests.yml
@@ -21,10 +21,10 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install ruff
+          pip install ruff==0.1.5
       - name: Check quality
         run: make quality
       - name: Check if failure
         if: ${{ failure() }}
         run: |
-          echo "Quality check failed. Please install ruff: `pip install ruff` and then run `make style && make quality` from the root of the repository." >> $GITHUB_STEP_SUMMARY
\ No newline at end of file
+          echo "Quality check failed. Please install ruff: `pip install ruff` and then run `make style && make quality` from the root of the repository." >> $GITHUB_STEP_SUMMARY