diff --git a/api-index-v1.json b/api-index-v1.json
index e49e0070d8..874378be05 100644
--- a/api-index-v1.json
+++ b/api-index-v1.json
@@ -16346,6 +16346,17 @@
                 }
               ]
             },
+            {
+              "shortName": "UpdateMembership",
+              "fullName": "google.chat.v1.ChatService.UpdateMembership",
+              "mode": "UNARY",
+              "bindings": [
+                {
+                  "httpMethod": "PATCH",
+                  "path": "/v1/{membership.name=spaces/*/members/*}"
+                }
+              ]
+            },
             {
               "shortName": "UpdateMessage",
               "fullName": "google.chat.v1.ChatService.UpdateMessage",