diff --git a/zombi/mediawiki/values.yaml b/zombi/mediawiki/values.yaml
index 3496f8e..b693cc8 100644
--- a/zombi/mediawiki/values.yaml
+++ b/zombi/mediawiki/values.yaml
@@ -20,12 +20,12 @@ persistence:
 
 podAnnotations: {}
 
-podSecurityContext: {}
-  # fsGroup: 2000
+podSecurityContext:
+  fsGroup: 33  # www-data
 
 securityContext:
   runAsNonRoot: true
-  runAsUser: 33
+  runAsUser: 33  # www-data
   allowPrivilegeEscalation: false
   capabilities:
     drop: