diff --git a/.github/workflows/on-push-lint-charts.yml b/.github/workflows/on-push-lint-charts.yml
index e68538f..42b304b 100644
--- a/.github/workflows/on-push-lint-charts.yml
+++ b/.github/workflows/on-push-lint-charts.yml
@@ -13,7 +13,7 @@ on:
 
 env:
   KUBE_SCORE_VERSION: 1.17.0
-  HELM_VERSION: v3.13.2
+  HELM_VERSION: v3.19.0
 
 concurrency:
   group: ${{ github.ref }}
@@ -29,7 +29,7 @@ jobs:
           fetch-depth: 0
 
       - name: Set up Helm
-        uses: azure/setup-helm@v3
+        uses: azure/setup-helm@v4.3.0
         with:
           version: ${{ env.HELM_VERSION }}
 
@@ -64,7 +64,7 @@ jobs:
     strategy:
       matrix:
         # Choose from https://hub.docker.com/r/kindest/node/tags
-        KubeVersion: [ 1.30.10, 1.31.6, 1.32.2]
+        KubeVersion: [ 1.32.8, 1.33.4, 1.34.0]
 
     steps:
       - name: Checkout
diff --git a/TESTING.md b/TESTING.md
index 42c8a16..08c61cd 100644
--- a/TESTING.md
+++ b/TESTING.md
@@ -34,9 +34,6 @@ To run locally:
 
 *ct* can also test a chart by deploying it to a temporary namespace in a Kubernetes cluster, and waiting for indications that the deployment has been successful. This is a good way to test how the deployment behaves "for real".
 
-
-
-
 ct lint --config=.ci/ct-config.yaml
 
 Create a KinD cluster, by running `kind create cluster`:
diff --git a/charts/docker-mailserver/tests/__snapshot__/configmap_test.yaml.snap b/charts/docker-mailserver/tests/__snapshot__/configmap_test.yaml.snap
index cca8d4b..e8bf0c9 100644
--- a/charts/docker-mailserver/tests/__snapshot__/configmap_test.yaml.snap
+++ b/charts/docker-mailserver/tests/__snapshot__/configmap_test.yaml.snap
@@ -2,7 +2,7 @@ manifest should match snapshot:
   1: |
     apiVersion: v1
     data:
-      dovecot.cf: |2
+      dovecot.cf: |
         haproxy_trusted_networks = 10.0.0.0/8 192.168.0.0/16 172.16.0.0/12
         service imap-login {
             inet_listener imap {