diff --git a/.github/workflows/testsuite.yml b/.github/workflows/testsuite.yml
index 98ebd06..17625cc 100644
--- a/.github/workflows/testsuite.yml
+++ b/.github/workflows/testsuite.yml
@@ -71,7 +71,7 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           pip install mypy
-          mypy --install-types <<< "y"
+          mypy --install-types requirements.txt <<< "y"
 
       - name: Run mypy
         shell: bash