diff --git a/services/jenkins/configmap-jcasc.yaml b/services/jenkins/configmap-jcasc.yaml
index 57a07cf11..c1c6d14d3 100644
--- a/services/jenkins/configmap-jcasc.yaml
+++ b/services/jenkins/configmap-jcasc.yaml
@@ -465,8 +465,10 @@ data:
                   spec:
                     serviceAccountName: jenkins
                     securityContext:
-                      runAsUser: 1001
-                      runAsGroup: 1001
+                      runAsUser: 1000
+                      runAsGroup: 1000
+                      fsGroup: 1000
+                      fsGroupChangePolicy: "OnRootMismatch"
                     nodeSelector:
                       kubernetes.io/arch: arm64
                       node-role.kubernetes.io/worker: "true"