diff --git a/api_names_out.yaml b/api_names_out.yaml
index a902493c2..21b3e4835 100644
--- a/api_names_out.yaml
+++ b/api_names_out.yaml
@@ -69272,6 +69272,7 @@
 "/vault:v1/CorpusQuery": corpus_query
 "/vault:v1/CorpusQuery/driveQuery": drive_query
 "/vault:v1/CorpusQuery/groupsQuery": groups_query
+"/vault:v1/CorpusQuery/hangoutsChatQuery": hangouts_chat_query
 "/vault:v1/CorpusQuery/mailQuery": mail_query
 "/vault:v1/Empty": empty
 "/vault:v1/HeldAccount": held_account
@@ -69283,6 +69284,8 @@
 "/vault:v1/HeldGroupsQuery/endTime": end_time
 "/vault:v1/HeldGroupsQuery/startTime": start_time
 "/vault:v1/HeldGroupsQuery/terms": terms
+"/vault:v1/HeldHangoutsChatQuery": held_hangouts_chat_query
+"/vault:v1/HeldHangoutsChatQuery/includeRooms": include_rooms
 "/vault:v1/HeldMailQuery": held_mail_query
 "/vault:v1/HeldMailQuery/endTime": end_time
 "/vault:v1/HeldMailQuery/startTime": start_time
diff --git a/generated/google/apis/vault_v1.rb b/generated/google/apis/vault_v1.rb
index ef323ce7e..b9752d9f4 100644
--- a/generated/google/apis/vault_v1.rb
+++ b/generated/google/apis/vault_v1.rb
@@ -25,7 +25,7 @@ module Google
     # @see https://developers.google.com/vault
     module VaultV1
       VERSION = 'V1'
-      REVISION = '20180217'
+      REVISION = '20180303'
 
       # Manage your eDiscovery data
       AUTH_EDISCOVERY = 'https://www.googleapis.com/auth/ediscovery'
diff --git a/generated/google/apis/vault_v1/classes.rb b/generated/google/apis/vault_v1/classes.rb
index b87f7ef04..285261236 100644
--- a/generated/google/apis/vault_v1/classes.rb
+++ b/generated/google/apis/vault_v1/classes.rb
@@ -108,6 +108,11 @@ module Google
         # @return [Google::Apis::VaultV1::HeldGroupsQuery]
         attr_accessor :groups_query
       
+        # Query options for hangouts chat holds.
+        # Corresponds to the JSON property `hangoutsChatQuery`
+        # @return [Google::Apis::VaultV1::HeldHangoutsChatQuery]
+        attr_accessor :hangouts_chat_query
+      
         # Query options for mail holds.
         # Corresponds to the JSON property `mailQuery`
         # @return [Google::Apis::VaultV1::HeldMailQuery]
@@ -121,6 +126,7 @@ module Google
         def update!(**args)
           @drive_query = args[:drive_query] if args.key?(:drive_query)
           @groups_query = args[:groups_query] if args.key?(:groups_query)
+          @hangouts_chat_query = args[:hangouts_chat_query] if args.key?(:hangouts_chat_query)
           @mail_query = args[:mail_query] if args.key?(:mail_query)
         end
       end
@@ -224,6 +230,26 @@ module Google
         end
       end
       
+      # Query options for hangouts chat holds.
+      class HeldHangoutsChatQuery
+        include Google::Apis::Core::Hashable
+      
+        # If true, include rooms the user has participated in.
+        # Corresponds to the JSON property `includeRooms`
+        # @return [Boolean]
+        attr_accessor :include_rooms
+        alias_method :include_rooms?, :include_rooms
+      
+        def initialize(**args)
+           update!(**args)
+        end
+      
+        # Update properties of this object
+        def update!(**args)
+          @include_rooms = args[:include_rooms] if args.key?(:include_rooms)
+        end
+      end
+      
       # Query options for mail holds.
       class HeldMailQuery
         include Google::Apis::Core::Hashable
diff --git a/generated/google/apis/vault_v1/representations.rb b/generated/google/apis/vault_v1/representations.rb
index 380aeac52..56311ec7c 100644
--- a/generated/google/apis/vault_v1/representations.rb
+++ b/generated/google/apis/vault_v1/representations.rb
@@ -70,6 +70,12 @@ module Google
         include Google::Apis::Core::JsonObjectSupport
       end
       
+      class HeldHangoutsChatQuery
+        class Representation < Google::Apis::Core::JsonRepresentation; end
+      
+        include Google::Apis::Core::JsonObjectSupport
+      end
+      
       class HeldMailQuery
         class Representation < Google::Apis::Core::JsonRepresentation; end
       
@@ -173,6 +179,8 @@ module Google
       
           property :groups_query, as: 'groupsQuery', class: Google::Apis::VaultV1::HeldGroupsQuery, decorator: Google::Apis::VaultV1::HeldGroupsQuery::Representation
       
+          property :hangouts_chat_query, as: 'hangoutsChatQuery', class: Google::Apis::VaultV1::HeldHangoutsChatQuery, decorator: Google::Apis::VaultV1::HeldHangoutsChatQuery::Representation
+      
           property :mail_query, as: 'mailQuery', class: Google::Apis::VaultV1::HeldMailQuery, decorator: Google::Apis::VaultV1::HeldMailQuery::Representation
       
         end
@@ -208,6 +216,13 @@ module Google
         end
       end
       
+      class HeldHangoutsChatQuery
+        # @private
+        class Representation < Google::Apis::Core::JsonRepresentation
+          property :include_rooms, as: 'includeRooms'
+        end
+      end
+      
       class HeldMailQuery
         # @private
         class Representation < Google::Apis::Core::JsonRepresentation