diff --git a/generated/google/apis/monitoring_v3.rb b/generated/google/apis/monitoring_v3.rb
index 2d5bbd60d..bd63148bc 100644
--- a/generated/google/apis/monitoring_v3.rb
+++ b/generated/google/apis/monitoring_v3.rb
@@ -29,7 +29,7 @@ module Google
     # @see https://cloud.google.com/monitoring/api/
     module MonitoringV3
       VERSION = 'V3'
-      REVISION = '20201208'
+      REVISION = '20201213'
 
       # 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/monitoring_v3/classes.rb b/generated/google/apis/monitoring_v3/classes.rb
index 01350d555..a3638d1ff 100644
--- a/generated/google/apis/monitoring_v3/classes.rb
+++ b/generated/google/apis/monitoring_v3/classes.rb
@@ -425,7 +425,7 @@ module Google
         end
       end
       
-      # Istio service scoped to a single Kubernetes cluster. Learn more at http://
+      # Istio service scoped to a single Kubernetes cluster. Learn more at https://
       # istio.io. Clusters running OSS Istio will have their services ingested as this
       # type.
       class ClusterIstio
@@ -3236,7 +3236,7 @@ module Google
         # @return [Google::Apis::MonitoringV3::CloudEndpoints]
         attr_accessor :cloud_endpoints
       
-        # Istio service scoped to a single Kubernetes cluster. Learn more at http://
+        # Istio service scoped to a single Kubernetes cluster. Learn more at https://
         # istio.io. Clusters running OSS Istio will have their services ingested as this
         # type.
         # Corresponds to the JSON property `clusterIstio`
diff --git a/generated/google/apis/monitoring_v3/synth.metadata b/generated/google/apis/monitoring_v3/synth.metadata
index 7008e17b1..35ef89c5d 100644
--- a/generated/google/apis/monitoring_v3/synth.metadata
+++ b/generated/google/apis/monitoring_v3/synth.metadata
@@ -4,7 +4,7 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/google-api-ruby-client.git",
-        "sha": "bd2875d8c126ec19d1a37b9179f60def0bf24899"
+        "sha": "34e90009797725e1e4d445f7d8ca94a043a2a746"
       }
     }
   ]