diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index ddedabf7a..58860bd8c 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -46,7 +46,7 @@ jobs:
     - uses: actions/setup-python@v4
       with:
         python-version: '3.x'
-    - run: python -m pip install mypy coverage types-PyYAML types-tqdm types-chevron
+    - run: python -m pip install mypy coverage strictyaml types-PyYAML types-tqdm types-chevron
     - run: python run_mypy.py --allver
       env:
         PYTHONUNBUFFERED: 1