diff --git a/google-cloud-pubsub-v1/lib/google/cloud/pubsub/v1/subscriber/client.rb b/google-cloud-pubsub-v1/lib/google/cloud/pubsub/v1/subscriber/client.rb
index ff00e5aa07b3..57686fc9eb9b 100644
--- a/google-cloud-pubsub-v1/lib/google/cloud/pubsub/v1/subscriber/client.rb
+++ b/google-cloud-pubsub-v1/lib/google/cloud/pubsub/v1/subscriber/client.rb
@@ -341,7 +341,7 @@ def initialize
             #     backlog, from the moment a message is published. If `retain_acked_messages`
             #     is true, then this also configures the retention of acknowledged messages,
             #     and thus configures how far back in time a `Seek` can be done. Defaults to
-            #     7 days. Cannot be more than 7 days or less than 10 minutes.
+            #     7 days. Cannot be more than 31 days or less than 10 minutes.
             #   @param labels [::Hash{::String => ::String}]
             #     Optional. See [Creating and managing
             #     labels](https://cloud.google.com/pubsub/docs/labels).
diff --git a/google-cloud-pubsub-v1/proto_docs/google/pubsub/v1/pubsub.rb b/google-cloud-pubsub-v1/proto_docs/google/pubsub/v1/pubsub.rb
index 86be4dc763d2..f63dfd14f608 100644
--- a/google-cloud-pubsub-v1/proto_docs/google/pubsub/v1/pubsub.rb
+++ b/google-cloud-pubsub-v1/proto_docs/google/pubsub/v1/pubsub.rb
@@ -500,7 +500,7 @@ class DetachSubscriptionResponse
         #     backlog, from the moment a message is published. If `retain_acked_messages`
         #     is true, then this also configures the retention of acknowledged messages,
         #     and thus configures how far back in time a `Seek` can be done. Defaults to
-        #     7 days. Cannot be more than 7 days or less than 10 minutes.
+        #     7 days. Cannot be more than 31 days or less than 10 minutes.
         # @!attribute [rw] labels
         #   @return [::Google::Protobuf::Map{::String => ::String}]
         #     Optional. See [Creating and managing