diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c715e2c9b..4f78def4a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -76,7 +76,7 @@ jobs:
                 python-version: 3.8
 
             - name: Install build-only deps
-              run: pip install flake8 mypy types-requests sphinx
+              run: pip install flake8 mypy types-requests types-docutils types-docutils sphinx
 
             - name: Run pyflakes
               run: python -m flake8 --count .