diff --git a/lib/rb/Manifest b/lib/rb/Manifest
index 7b4503f..fd1f031 100644
--- a/lib/rb/Manifest
+++ b/lib/rb/Manifest
@@ -28,6 +28,8 @@
 lib/thrift/exceptions.rb
 lib/thrift/processor.rb
 lib/thrift/struct.rb
+lib/thrift/struct_union.rb
+lib/thrift/union.rb
 lib/thrift/thrift_native.rb
 lib/thrift/types.rb
 lib/thrift/core_ext/fixnum.rb
@@ -76,6 +78,7 @@
 spec/socket_spec_shared.rb
 spec/spec_helper.rb
 spec/struct_spec.rb
+spec/union_spec.rb
 spec/ThriftSpec.thrift
 spec/types_spec.rb
 spec/unix_socket_spec.rb