diff --git a/google/cloud/phishingprotection/v1beta1/phishingprotection.proto b/google/cloud/phishingprotection/v1beta1/phishingprotection.proto
index ce0c3624..01a89ec2 100644
--- a/google/cloud/phishingprotection/v1beta1/phishingprotection.proto
+++ b/google/cloud/phishingprotection/v1beta1/phishingprotection.proto
@@ -29,6 +29,7 @@ option java_outer_classname = "PhishingProtectionProto";
 option java_package = "com.google.phishingprotection.v1beta1";
 option objc_class_prefix = "GCPP";
 option php_namespace = "Google\\Cloud\\PhishingProtection\\V1beta1";
+option ruby_package = "Google::Cloud::PhishingProtection::V1beta1";
 
 // Service to report phishing URIs.
 service PhishingProtectionServiceV1Beta1 {