diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 66f4773..ad45fa6 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -19,11 +19,10 @@ jobs:
         with:
           python-version: 3.7
 
-      - name: Install Poetry
-        uses: snok/install-poetry@v1
-
       - name: Install ExCore
-        run: poetry install --no-interaction --with dev
+        run: |
+          pip install poetry
+          poetry install --with dev
 
       - name: Run pytest
         run: |