diff --git a/.github/workflows/unit.yml b/.github/workflows/unit.yml
index 754aba4c..fea0be17 100644
--- a/.github/workflows/unit.yml
+++ b/.github/workflows/unit.yml
@@ -31,10 +31,13 @@ jobs:
     strategy:
       matrix:
         node-version: [20.x]
+        volto-version: [17, 18]
 
     steps:
       - name: Main checkout
         uses: actions/checkout@v4
 
       - name: Unit tests
+        env:
+          VOLTO_VERSION: ${{ matrix.volto-version }}
         run: make test-ci