diff --git a/lib/gcloud/storage/bucket.rb b/lib/gcloud/storage/bucket.rb
index <HASH>..<HASH> 100644
--- a/lib/gcloud/storage/bucket.rb
+++ b/lib/gcloud/storage/bucket.rb
@@ -773,7 +773,7 @@ module Gcloud
         end
 
         ##
-        # Make sure any cors changes are saved
+        # @private Make sure any cors changes are saved
         def check_for_mutable_cors!
           return if @cors_builder.nil?
           return unless @cors_builder.changed?
diff --git a/lib/gcloud/storage/file.rb b/lib/gcloud/storage/file.rb
index <HASH>..<HASH> 100644
--- a/lib/gcloud/storage/file.rb
+++ b/lib/gcloud/storage/file.rb
@@ -821,7 +821,7 @@ module Gcloud
         end
 
         ##
-        # Make sure any metadata changes are saved
+        # @private Make sure any metadata changes are saved
         def check_for_changed_metadata!
           return if @metadata == @gapi.metadata
           @gapi.metadata = @metadata
Mark Storage Updater methods private

These methods are not part of the public API.