diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3c92a47..f8d9270 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -3,14 +3,22 @@ on: push
 
 jobs:
   ci:
+    strategy:
+      matrix:
+        python_version: [3.5.9, 3.7.0, 3.8.0]
+        poetry_version: [0.12.17]
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@master
     - name: Run image
       uses: ./
       with:
-        python_version: 3.8.0
-        poetry_version: 0.12.17
+        python_version: ${{ matrix.python_version }}
+        poetry_version: ${{ matrix.poetry_version }}
+  release:
+    needs: ci
+    runs-on: ubuntu-latest
+    steps:
     - name: Generate release
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}