diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index b193ea6..3095d10 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -3,6 +3,10 @@ name: Continuous integration
 
 on:
   push:
+    branches:
+      - master
+    tags:
+      - '*'
   pull_request:
 
 env:
@@ -15,6 +19,13 @@ jobs:
     timeout-minutes: 20
     if: "!startsWith(github.event.head_commit.message, '[skip ci] ')"
 
+    strategy:
+      fail-fast: true
+      matrix:
+        helm:
+          - latest
+          - 3.5.1
+
     steps:
       - uses: actions/checkout@v3
         with:
@@ -34,11 +45,14 @@ jobs:
 
       - name: Install helm
         uses: azure/setup-helm@v1
+        with:
+          version: ${{ matrix.helm }}
       - run: helm dependency update .
       - run: helm lint .
       - run: helm lint --values=tests/values.yaml .
       - run: helm template --namespace=default --values=tests/values.yaml custom . > tests/actual.yaml
       - run: diff --ignore-trailing-space tests/actual.yaml tests/expected.yaml
+        if: matrix.helm == 'master'
 
       - name: Setup k3s/k3d
         run: c2cciutils-k8s-install