diff --git a/google/devtools/cloudtrace/v1/trace.proto b/google/devtools/cloudtrace/v1/trace.proto
index 00cc14db..f5f14129 100644
--- a/google/devtools/cloudtrace/v1/trace.proto
+++ b/google/devtools/cloudtrace/v1/trace.proto
@@ -29,6 +29,7 @@ option java_multiple_files = true;
 option java_outer_classname = "TraceProto";
 option java_package = "com.google.devtools.cloudtrace.v1";
 option php_namespace = "Google\\Cloud\\Trace\\V1";
+option ruby_package = "Google::Cloud::Trace::V1";
 
 // This file describes an API for collecting and viewing traces and spans
 // within a trace.  A Trace is a collection of spans corresponding to a single
diff --git a/google/devtools/cloudtrace/v2/trace.proto b/google/devtools/cloudtrace/v2/trace.proto
index f5e62832..e7079b03 100644
--- a/google/devtools/cloudtrace/v2/trace.proto
+++ b/google/devtools/cloudtrace/v2/trace.proto
@@ -29,6 +29,7 @@ option java_multiple_files = true;
 option java_outer_classname = "TraceProto";
 option java_package = "com.google.devtools.cloudtrace.v2";
 option php_namespace = "Google\\Cloud\\Trace\\V2";
+option ruby_package = "Google::Cloud::Trace::V2";
 
 // A span represents a single operation within a trace. Spans can be
 // nested to form a trace tree. Often, a trace contains a root span
diff --git a/google/devtools/cloudtrace/v2/tracing.proto b/google/devtools/cloudtrace/v2/tracing.proto
index 966a8179..886f9831 100644
--- a/google/devtools/cloudtrace/v2/tracing.proto
+++ b/google/devtools/cloudtrace/v2/tracing.proto
@@ -31,6 +31,7 @@ option java_multiple_files = true;
 option java_outer_classname = "TracingProto";
 option java_package = "com.google.devtools.cloudtrace.v2";
 option php_namespace = "Google\\Cloud\\Trace\\V2";
+option ruby_package = "Google::Cloud::Trace::V2";
 
 // This file describes an API for collecting and viewing traces and spans
 // within a trace.  A Trace is a collection of spans corresponding to a single