diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index 50e653f..01e4bc4 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -19,5 +19,6 @@ jobs:
         with:
           key: ${{ github.ref }}
           path: .cache
+      - run: pip install --upgrade pendulum aiohttp
       - run: pip install --upgrade .["dev"]
       - run: mkdocs gh-deploy --force