diff --git a/templates/gitea/act_runner/statefulset.yaml b/templates/gitea/act_runner/statefulset.yaml
index 46382bf..c4a7fef 100644
--- a/templates/gitea/act_runner/statefulset.yaml
+++ b/templates/gitea/act_runner/statefulset.yaml
@@ -21,6 +21,8 @@ spec:
       {{- include "gitea.selectorLabels.actRunner" . | nindent 6 }}
   template:
     metadata:
+      annotations:
+        checksum/config: {{ include (print $.Template.BasePath "/gitea/act_runner/config-act-runner.yaml") . | sha256sum }}
       labels:
         {{- include "gitea.labels.actRunner" . | nindent 8 }}
         {{- with .Values.actions.statefulset.labels }}
diff --git a/unittests/act_runner/statefulset.yaml b/unittests/act_runner/statefulset.yaml
index cd350d9..fdcccb8 100644
--- a/unittests/act_runner/statefulset.yaml
+++ b/unittests/act_runner/statefulset.yaml
@@ -4,6 +4,7 @@ release:
   namespace: testing
 templates:
   - templates/gitea/act_runner/statefulset.yaml
+  - templates/gitea/act_runner/config-act-runner.yaml
 tests:
   - it: doesn't renders a StatefulSet by default
     template: templates/gitea/act_runner/statefulset.yaml
@@ -54,6 +55,23 @@ tests:
               secretKeyRef:
                 name: "gitea-unittests-actions-token"
                 key: "token"
+  - it: renders a StatefulSet (that tracks changes of the runner configuration as annotation)
+    template: templates/gitea/act_runner/statefulset.yaml
+    set:
+      actions:
+        enabled: true
+        existingSecret: "my-secret"
+        existingSecretKey: "my-secret-key"
+    asserts:
+      - hasDocuments:
+          count: 1
+      - containsDocument:
+          kind: StatefulSet
+          apiVersion: apps/v1
+          name: gitea-unittests-act-runner
+      - equal:
+          path: spec.template.metadata.annotations["checksum/config"]
+          value: "2a2200e80fc29111d18b675789c265cd3d5f917754850f946f1ce3c55dcd65f8"
   - it: renders a StatefulSet (with correct GITEA_INSTANCE_URL env with default act-runner specific LOCAL_ROOT_URL)
     template: templates/gitea/act_runner/statefulset.yaml
     set:
diff --git a/values.yaml b/values.yaml
index 2dfb62d..7a811da 100644
--- a/values.yaml
+++ b/values.yaml
@@ -397,14 +397,12 @@ actions:
       tag: 0.2.11
       pullPolicy: IfNotPresent
 
+      # See full example here: https://gitea.com/gitea/act_runner/src/branch/main/internal/pkg/config/config.example.yaml
       config: |
         log:
           level: debug
         cache:
           enabled: false
-        runner:
-          labels:
-            - "ubuntu-latest"
 
     dind:
       repository: docker