diff --git a/generated/google/apis/iamcredentials_v1.rb b/generated/google/apis/iamcredentials_v1.rb
index 0c86782a6..384ea7983 100644
--- a/generated/google/apis/iamcredentials_v1.rb
+++ b/generated/google/apis/iamcredentials_v1.rb
@@ -20,14 +20,13 @@ module Google
   module Apis
     # IAM Service Account Credentials API
     #
-    # Creates short-lived credentials for impersonating IAM service accounts. *Note:
-    # * This API is tied to the IAM API (iam.googleapis.com). Enabling or disabling
-    # this API will also enable or disable the IAM API.
+    # Creates short-lived credentials for impersonating IAM service accounts. To
+    # enable this API, you must enable the IAM API (iam.googleapis.com).
     #
     # @see https://cloud.google.com/iam/docs/creating-short-lived-service-account-credentials
     module IamcredentialsV1
       VERSION = 'V1'
-      REVISION = '20200821'
+      REVISION = '20201022'
 
       # 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/iamcredentials_v1/service.rb b/generated/google/apis/iamcredentials_v1/service.rb
index 776da38f8..e6b303702 100644
--- a/generated/google/apis/iamcredentials_v1/service.rb
+++ b/generated/google/apis/iamcredentials_v1/service.rb
@@ -22,9 +22,8 @@ module Google
     module IamcredentialsV1
       # IAM Service Account Credentials API
       #
-      # Creates short-lived credentials for impersonating IAM service accounts. *Note:
-      #  * This API is tied to the IAM API (iam.googleapis.com). Enabling or disabling
-      #  this API will also enable or disable the IAM API.
+      # Creates short-lived credentials for impersonating IAM service accounts. To
+      #  enable this API, you must enable the IAM API (iam.googleapis.com).
       #
       # @example
       #    require 'google/apis/iamcredentials_v1'
diff --git a/generated/google/apis/iamcredentials_v1/synth.metadata b/generated/google/apis/iamcredentials_v1/synth.metadata
index 429012f74..7ee91b7ad 100644
--- a/generated/google/apis/iamcredentials_v1/synth.metadata
+++ b/generated/google/apis/iamcredentials_v1/synth.metadata
@@ -4,7 +4,7 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/google-api-ruby-client.git",
-        "sha": "c98c719bbab68d0890524d53f8b629d7858af9c2"
+        "sha": "4d5b98ffca7eaf905a28939051f53ff2881aaf64"
       }
     }
   ]