diff --git a/.github/workflows/mypy.yml b/.github/workflows/mypy.yml
index d64d1958..6081a268 100644
--- a/.github/workflows/mypy.yml
+++ b/.github/workflows/mypy.yml
@@ -45,7 +45,9 @@ jobs:
     - name: Test with mypy
       run: |
         # Install ibm-fms from the main branch for testing purposes
-        pip install ibm-fms@git+https://github.com/foundation-model-stack/foundation-model-stack@main
+        # Use -I to ignore the existing install and actually install
+        # the version on main
+        pip install -I ibm-fms@git+https://github.com/foundation-model-stack/foundation-model-stack@main
 
         # No type stubs available for "fire" and "transformers"
         mypy --exclude fms_to_hf.py --exclude main_training.py .
@@ -55,4 +57,4 @@ jobs:
       uses: actions/cache/save@v4
       with:
         path: ./.venv/
-        key: ${{ steps.cache-venv-restore.outputs.cache-primary-key }}
\ No newline at end of file
+        key: ${{ steps.cache-venv-restore.outputs.cache-primary-key }}