diff --git a/.github/workflows/python-tests.yml b/.github/workflows/python-tests.yml
index 9eda7223..0d37956e 100644
--- a/.github/workflows/python-tests.yml
+++ b/.github/workflows/python-tests.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.7, 3.8]
+        python-version: [3.7]
 
     steps:
     - uses: actions/checkout@v1
@@ -20,7 +20,7 @@ jobs:
     - name: Install dependencies
       run: |
         python3 -m pip install --upgrade pip
-        python3 -m pip install tox tox-gh-actions
+        python3 -m pip install tox tox-gh-actions gi
         python3 -m pip install -e .
     - name: Test with tox
       run: tox