diff --git a/README.md b/README.md
index 9ced5e09..0038f18b 100644
--- a/README.md
+++ b/README.md
@@ -164,12 +164,20 @@ auth:
     clientSecret: ""
     scopes: ""
     redirectURL: ""
+    // Optionally restrict login to users with an allowed email domain
+    // if empty or omitted, any email domain will be allowed.
+    emailDomains:
+      - example.com
   gitlab:
     name: ""
     baseURL: ""
     clientID: ""
     clientSecret: ""
     redirectURL: ""
+    // Optionally restrict login to users with an allowed email domain
+    // if empty or omitted, any email domain will be allowed.
+    emailDomains:
+      - example.com
 ```
 
 ## Screenshots