diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 73a577d..541aa8d 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -10,11 +10,21 @@ jobs:
   requestActivation:
     name: Request activation ✔
     runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        unityVersion:
+          - 2018.4.15f1
+          - 2019.2.11f1
+          - 2019.2.14f1
+          - 2019.2.17f1
     steps:
       # Checkout repository (required to test local actions)
       - name: Checkout repository
-        uses: actions/checkout@v1
+        uses: actions/checkout@v2
 
       # Activate Unity
       - name: Activate Unity
         uses: ./
+        with:
+          unityVersion: ${{ matrix.unityVersion }}