diff --git a/generated/google/apis/testing_v1.rb b/generated/google/apis/testing_v1.rb
index 771ac9bbf..d51cfae83 100644
--- a/generated/google/apis/testing_v1.rb
+++ b/generated/google/apis/testing_v1.rb
@@ -26,7 +26,7 @@ module Google
     # @see https://developers.google.com/cloud-test-lab/
     module TestingV1
       VERSION = 'V1'
-      REVISION = '20180830'
+      REVISION = '20180901'
 
       # 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/testing_v1/classes.rb b/generated/google/apis/testing_v1/classes.rb
index 1cdbc03c8..c09d4b9fc 100644
--- a/generated/google/apis/testing_v1/classes.rb
+++ b/generated/google/apis/testing_v1/classes.rb
@@ -1703,8 +1703,10 @@ module Google
         # @return [Array<Google::Apis::TestingV1::DeviceFile>]
         attr_accessor :files_to_push
       
-        # The network traffic profile used for running the test.
-        # Optional
+        # Optional. The network traffic profile used for running the test.
+        # Available network profiles can be queried by using the
+        # NETWORK_CONFIGURATION environment type when calling
+        # TestEnvironmentDiscoveryService.GetTestEnvironmentCatalog.
         # Corresponds to the JSON property `networkProfile`
         # @return [String]
         attr_accessor :network_profile