diff --git a/google/cloud/policytroubleshooter/v1/checker.proto b/google/cloud/policytroubleshooter/v1/checker.proto
index 6fae32d1..1b20892e 100644
--- a/google/cloud/policytroubleshooter/v1/checker.proto
+++ b/google/cloud/policytroubleshooter/v1/checker.proto
@@ -22,10 +22,13 @@ import "google/api/annotations.proto";
 import "google/api/client.proto";
 
 option cc_enable_arenas = true;
+option csharp_namespace = "Google.Cloud.PolicyTroubleshooter.V1";
 option go_package = "google.golang.org/genproto/googleapis/cloud/policytroubleshooter/v1;policytroubleshooter";
 option java_multiple_files = true;
 option java_outer_classname = "IAMCheckerProto";
 option java_package = "com.google.cloud.policytroubleshooter.v1";
+option php_namespace = "Google\\Cloud\\PolicyTroubleshooter\\V1";
+option ruby_package = "Google::Cloud::PolicyTroubleshooter::V1";
 
 // IAM Policy Troubleshooter service.
 //
diff --git a/google/cloud/policytroubleshooter/v1/explanations.proto b/google/cloud/policytroubleshooter/v1/explanations.proto
index 7fe73689..bfabe42c 100644
--- a/google/cloud/policytroubleshooter/v1/explanations.proto
+++ b/google/cloud/policytroubleshooter/v1/explanations.proto
@@ -21,7 +21,14 @@ import "google/api/field_behavior.proto";
 import "google/iam/v1/policy.proto";
 import "google/type/expr.proto";
 
+option cc_enable_arenas = true;
+option csharp_namespace = "Google.Cloud.PolicyTroubleshooter.V1";
 option go_package = "google.golang.org/genproto/googleapis/cloud/policytroubleshooter/v1;policytroubleshooter";
+option java_multiple_files = true;
+option java_outer_classname = "ExplanationsProto";
+option java_package = "com.google.cloud.policytroubleshooter.v1";
+option php_namespace = "Google\\Cloud\\PolicyTroubleshooter\\V1";
+option ruby_package = "Google::Cloud::PolicyTroubleshooter::V1";
 
 // Information about the member, resource, and permission to check.
 message AccessTuple {