diff --git a/api_names_out.yaml b/api_names_out.yaml
index 852928c9c..c6fdee29d 100644
--- a/api_names_out.yaml
+++ b/api_names_out.yaml
@@ -97668,6 +97668,7 @@
 "/domains:v1alpha2/AuthorizationCode": authorization_code
 "/domains:v1alpha2/AuthorizationCode/code": code
 "/domains:v1alpha2/Binding": binding
+"/domains:v1alpha2/Binding/bindingId": binding_id
 "/domains:v1alpha2/Binding/condition": condition
 "/domains:v1alpha2/Binding/members": members
 "/domains:v1alpha2/Binding/members/member": member
diff --git a/generated/google/apis/domains_v1alpha2.rb b/generated/google/apis/domains_v1alpha2.rb
index fe82f11a9..845e20076 100644
--- a/generated/google/apis/domains_v1alpha2.rb
+++ b/generated/google/apis/domains_v1alpha2.rb
@@ -25,7 +25,7 @@ module Google
     # @see https://cloud.google.com/domains/
     module DomainsV1alpha2
       VERSION = 'V1alpha2'
-      REVISION = '20201013'
+      REVISION = '20201029'
 
       # 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/domains_v1alpha2/classes.rb b/generated/google/apis/domains_v1alpha2/classes.rb
index 6ac739187..6e0f43d65 100644
--- a/generated/google/apis/domains_v1alpha2/classes.rb
+++ b/generated/google/apis/domains_v1alpha2/classes.rb
@@ -117,6 +117,11 @@ module Google
       class Binding
         include Google::Apis::Core::Hashable
       
+        # 
+        # Corresponds to the JSON property `bindingId`
+        # @return [String]
+        attr_accessor :binding_id
+      
         # Represents a textual expression in the Common Expression Language (CEL) syntax.
         # CEL is a C-like expression language. The syntax and semantics of CEL are
         # documented at https://github.com/google/cel-spec. Example (Comparison): title:
@@ -178,6 +183,7 @@ module Google
       
         # Update properties of this object
         def update!(**args)
+          @binding_id = args[:binding_id] if args.key?(:binding_id)
           @condition = args[:condition] if args.key?(:condition)
           @members = args[:members] if args.key?(:members)
           @role = args[:role] if args.key?(:role)
diff --git a/generated/google/apis/domains_v1alpha2/representations.rb b/generated/google/apis/domains_v1alpha2/representations.rb
index 25201991c..5e84a4599 100644
--- a/generated/google/apis/domains_v1alpha2/representations.rb
+++ b/generated/google/apis/domains_v1alpha2/representations.rb
@@ -265,6 +265,7 @@ module Google
       class Binding
         # @private
         class Representation < Google::Apis::Core::JsonRepresentation
+          property :binding_id, as: 'bindingId'
           property :condition, as: 'condition', class: Google::Apis::DomainsV1alpha2::Expr, decorator: Google::Apis::DomainsV1alpha2::Expr::Representation
       
           collection :members, as: 'members'
diff --git a/generated/google/apis/domains_v1alpha2/synth.metadata b/generated/google/apis/domains_v1alpha2/synth.metadata
index 429012f74..88a73b724 100644
--- a/generated/google/apis/domains_v1alpha2/synth.metadata
+++ b/generated/google/apis/domains_v1alpha2/synth.metadata
@@ -4,7 +4,7 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/google-api-ruby-client.git",
-        "sha": "c98c719bbab68d0890524d53f8b629d7858af9c2"
+        "sha": "768d3937e6c487b755846b65267c20674e52a10c"
       }
     }
   ]