diff --git a/compiler/cpp/src/thrifty.yy b/compiler/cpp/src/thrifty.yy
index e0dde8c..59f6b4f 100644
--- a/compiler/cpp/src/thrifty.yy
+++ b/compiler/cpp/src/thrifty.yy
@@ -297,13 +297,17 @@
     {
       pdebug("Header -> Include");
     }
-| tok_namespace tok_identifier tok_identifier
+| tok_namespace tok_identifier tok_identifier TypeAnnotations
     {
       pdebug("Header -> tok_namespace tok_identifier tok_identifier");
       declare_valid_program_doctext();
       if (g_parse_mode == PROGRAM) {
         g_program->set_namespace($2, $3);
       }
+      if ($4 != NULL) {
+        g_program->set_namespace_annotations($2, $4->annotations_);
+        delete $4;
+      }
     }
 | tok_namespace '*' tok_identifier
     {