diff --git a/.github/workflows/python-pull-request.yml b/.github/workflows/python-pull-request.yml
index de0f041c..df83a2d6 100644
--- a/.github/workflows/python-pull-request.yml
+++ b/.github/workflows/python-pull-request.yml
@@ -42,7 +42,7 @@ jobs:
         echo "models_changed=$(echo "$CHANGED_FILES" | grep -q '^models/.*\.py$' && echo 'true' || echo 'false')" >> $GITHUB_OUTPUT
 
     - name: Install core packages
-      run: pip install -e ./graphs/[tests] -e ./training/[tests] -e ./models/[tests]
+      run: pip install -e ./graphs/[tests]==0.0.post1 -e ./training/[tests]==0.0.post1 -e ./models/[tests]==0.0.post1
 
     - name: Run integration tests
       run: pytest tests