diff --git a/basic/overrides/stackspin-zulip-override.yaml b/basic/overrides/stackspin-zulip-override.yaml
new file mode 100644
index 0000000..3ddf872
--- /dev/null
+++ b/basic/overrides/stackspin-zulip-override.yaml
@@ -0,0 +1,11 @@
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  namespace: stackspin-apps
+  name: stackspin-nextcloud-override
+data:
+  values.yaml: |
+    zulip:
+      environment:
+        SETTING_AUTHENTICATION_BACKENDS: '("zproject.backends.GenericOpenIdConnectBackend","EmailAuthBackend")'