diff --git a/generated/google/apis/iap_v1.rb b/generated/google/apis/iap_v1.rb
index 079be8de0..7ff8716c3 100644
--- a/generated/google/apis/iap_v1.rb
+++ b/generated/google/apis/iap_v1.rb
@@ -25,7 +25,7 @@ module Google
     # @see https://cloud.google.com/iap
     module IapV1
       VERSION = 'V1'
-      REVISION = '20200828'
+      REVISION = '20201030'
 
       # View and manage your data across Google Cloud Platform services
       AUTH_CLOUD_PLATFORM = 'https://www.googleapis.com/auth/cloud-platform'
diff --git a/generated/google/apis/iap_v1/classes.rb b/generated/google/apis/iap_v1/classes.rb
index 6394257ea..5849c1453 100644
--- a/generated/google/apis/iap_v1/classes.rb
+++ b/generated/google/apis/iap_v1/classes.rb
@@ -129,8 +129,7 @@ module Google
       class Binding
         include Google::Apis::Core::Hashable
       
-        # A client-specified ID for this binding. Expected to be globally unique to
-        # support the internal bindings-by-ID API.
+        # 
         # Corresponds to the JSON property `bindingId`
         # @return [String]
         attr_accessor :binding_id
@@ -547,16 +546,6 @@ module Google
       class OAuthSettings
         include Google::Apis::Core::Hashable
       
-        # OAuth 2.0 client ID used in the OAuth flow to generate an access token. If
-        # this field is set, you can skip obtaining the OAuth credentials in this step:
-        # https://developers.google.com/identity/protocols/OAuth2?hl=en_US#1.-obtain-
-        # oauth-2.0-credentials-from-the-google-api-console. However, this could allow
-        # for client sharing. The risks of client sharing are outlined here: https://
-        # cloud.google.com/iap/docs/sharing-oauth-clients#risks.
-        # Corresponds to the JSON property `clientId`
-        # @return [String]
-        attr_accessor :client_id
-      
         # Domain hint to send as hd=? parameter in OAuth request flow. Enables redirect
         # to primary IDP by skipping Google's login screen. https://developers.google.
         # com/identity/protocols/OpenIDConnect#hd-param Note: IAP does not verify that
@@ -572,7 +561,6 @@ module Google
       
         # Update properties of this object
         def update!(**args)
-          @client_id = args[:client_id] if args.key?(:client_id)
           @login_hint = args[:login_hint] if args.key?(:login_hint)
         end
       end
diff --git a/generated/google/apis/iap_v1/representations.rb b/generated/google/apis/iap_v1/representations.rb
index 67aa9757c..e0d08a434 100644
--- a/generated/google/apis/iap_v1/representations.rb
+++ b/generated/google/apis/iap_v1/representations.rb
@@ -318,7 +318,6 @@ module Google
       class OAuthSettings
         # @private
         class Representation < Google::Apis::Core::JsonRepresentation
-          property :client_id, as: 'clientId'
           property :login_hint, as: 'loginHint'
         end
       end
diff --git a/generated/google/apis/iap_v1/synth.metadata b/generated/google/apis/iap_v1/synth.metadata
index 429012f74..e4db80520 100644
--- a/generated/google/apis/iap_v1/synth.metadata
+++ b/generated/google/apis/iap_v1/synth.metadata
@@ -4,7 +4,7 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/google-api-ruby-client.git",
-        "sha": "c98c719bbab68d0890524d53f8b629d7858af9c2"
+        "sha": "9a346a623e5622b475bc09353178499abd8d6900"
       }
     }
   ]