diff --git a/api_names_out.yaml b/api_names_out.yaml
index 937f37618..264ffca22 100644
--- a/api_names_out.yaml
+++ b/api_names_out.yaml
@@ -124923,8 +124923,11 @@
 "/recommendationengine:v1beta1/GoogleCloudRecommendationengineV1beta1PurgeUserEventsResponse/purgedEventsCount": purged_events_count
 "/recommendationengine:v1beta1/GoogleCloudRecommendationengineV1beta1PurgeUserEventsResponse/userEventsSample": user_events_sample
 "/recommendationengine:v1beta1/GoogleCloudRecommendationengineV1beta1PurgeUserEventsResponse/userEventsSample/user_events_sample": user_events_sample
+"/recommendationengine:v1beta1/GoogleCloudRecommendationengineV1beta1RejoinUserEventsMetadata": google_cloud_recommendationengine_v1beta1_rejoin_user_events_metadata
 "/recommendationengine:v1beta1/GoogleCloudRecommendationengineV1beta1RejoinUserEventsRequest": google_cloud_recommendationengine_v1beta1_rejoin_user_events_request
 "/recommendationengine:v1beta1/GoogleCloudRecommendationengineV1beta1RejoinUserEventsRequest/userEventRejoinScope": user_event_rejoin_scope
+"/recommendationengine:v1beta1/GoogleCloudRecommendationengineV1beta1RejoinUserEventsResponse": google_cloud_recommendationengine_v1beta1_rejoin_user_events_response
+"/recommendationengine:v1beta1/GoogleCloudRecommendationengineV1beta1RejoinUserEventsResponse/rejoinedUserEventsCount": rejoined_user_events_count
 "/recommendationengine:v1beta1/GoogleCloudRecommendationengineV1beta1UserEvent": google_cloud_recommendationengine_v1beta1_user_event
 "/recommendationengine:v1beta1/GoogleCloudRecommendationengineV1beta1UserEvent/eventDetail": event_detail
 "/recommendationengine:v1beta1/GoogleCloudRecommendationengineV1beta1UserEvent/eventSource": event_source
diff --git a/generated/google/apis/recommendationengine_v1beta1.rb b/generated/google/apis/recommendationengine_v1beta1.rb
index a0f69afb1..b2cadf2d9 100644
--- a/generated/google/apis/recommendationengine_v1beta1.rb
+++ b/generated/google/apis/recommendationengine_v1beta1.rb
@@ -27,7 +27,7 @@ module Google
     # @see https://cloud.google.com/recommendations-ai/docs
     module RecommendationengineV1beta1
       VERSION = 'V1beta1'
-      REVISION = '20200810'
+      REVISION = '20201027'
 
       # 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/recommendationengine_v1beta1/classes.rb b/generated/google/apis/recommendationengine_v1beta1/classes.rb
index 899d3a3fb..4691554fa 100644
--- a/generated/google/apis/recommendationengine_v1beta1/classes.rb
+++ b/generated/google/apis/recommendationengine_v1beta1/classes.rb
@@ -1562,6 +1562,19 @@ module Google
         end
       end
       
+      # Metadata for RejoinUserEvents method.
+      class GoogleCloudRecommendationengineV1beta1RejoinUserEventsMetadata
+        include Google::Apis::Core::Hashable
+      
+        def initialize(**args)
+           update!(**args)
+        end
+      
+        # Update properties of this object
+        def update!(**args)
+        end
+      end
+      
       # Request message for CatalogRejoin method.
       class GoogleCloudRecommendationengineV1beta1RejoinUserEventsRequest
         include Google::Apis::Core::Hashable
@@ -1582,6 +1595,25 @@ module Google
         end
       end
       
+      # Response message for RejoinUserEvents method.
+      class GoogleCloudRecommendationengineV1beta1RejoinUserEventsResponse
+        include Google::Apis::Core::Hashable
+      
+        # Number of user events that were joined with latest catalog items.
+        # Corresponds to the JSON property `rejoinedUserEventsCount`
+        # @return [Fixnum]
+        attr_accessor :rejoined_user_events_count
+      
+        def initialize(**args)
+           update!(**args)
+        end
+      
+        # Update properties of this object
+        def update!(**args)
+          @rejoined_user_events_count = args[:rejoined_user_events_count] if args.key?(:rejoined_user_events_count)
+        end
+      end
+      
       # UserEvent captures all metadata information recommendation engine needs to
       # know about how end users interact with customers' website.
       class GoogleCloudRecommendationengineV1beta1UserEvent
diff --git a/generated/google/apis/recommendationengine_v1beta1/representations.rb b/generated/google/apis/recommendationengine_v1beta1/representations.rb
index 7dda29eae..0e3c5aa49 100644
--- a/generated/google/apis/recommendationengine_v1beta1/representations.rb
+++ b/generated/google/apis/recommendationengine_v1beta1/representations.rb
@@ -274,12 +274,24 @@ module Google
         include Google::Apis::Core::JsonObjectSupport
       end
       
+      class GoogleCloudRecommendationengineV1beta1RejoinUserEventsMetadata
+        class Representation < Google::Apis::Core::JsonRepresentation; end
+      
+        include Google::Apis::Core::JsonObjectSupport
+      end
+      
       class GoogleCloudRecommendationengineV1beta1RejoinUserEventsRequest
         class Representation < Google::Apis::Core::JsonRepresentation; end
       
         include Google::Apis::Core::JsonObjectSupport
       end
       
+      class GoogleCloudRecommendationengineV1beta1RejoinUserEventsResponse
+        class Representation < Google::Apis::Core::JsonRepresentation; end
+      
+        include Google::Apis::Core::JsonObjectSupport
+      end
+      
       class GoogleCloudRecommendationengineV1beta1UserEvent
         class Representation < Google::Apis::Core::JsonRepresentation; end
       
@@ -743,6 +755,12 @@ module Google
         end
       end
       
+      class GoogleCloudRecommendationengineV1beta1RejoinUserEventsMetadata
+        # @private
+        class Representation < Google::Apis::Core::JsonRepresentation
+        end
+      end
+      
       class GoogleCloudRecommendationengineV1beta1RejoinUserEventsRequest
         # @private
         class Representation < Google::Apis::Core::JsonRepresentation
@@ -750,6 +768,13 @@ module Google
         end
       end
       
+      class GoogleCloudRecommendationengineV1beta1RejoinUserEventsResponse
+        # @private
+        class Representation < Google::Apis::Core::JsonRepresentation
+          property :rejoined_user_events_count, :numeric_string => true, as: 'rejoinedUserEventsCount'
+        end
+      end
+      
       class GoogleCloudRecommendationengineV1beta1UserEvent
         # @private
         class Representation < Google::Apis::Core::JsonRepresentation
diff --git a/generated/google/apis/recommendationengine_v1beta1/synth.metadata b/generated/google/apis/recommendationengine_v1beta1/synth.metadata
index 429012f74..fc304e282 100644
--- a/generated/google/apis/recommendationengine_v1beta1/synth.metadata
+++ b/generated/google/apis/recommendationengine_v1beta1/synth.metadata
@@ -4,7 +4,7 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/google-api-ruby-client.git",
-        "sha": "c98c719bbab68d0890524d53f8b629d7858af9c2"
+        "sha": "1a0c4a7b0f26aaefb051e7117cc464830308304b"
       }
     }
   ]