diff --git a/core/proto/OWNERS b/core/proto/OWNERS
index 74ced8921799b..4892faaceafee 100644
--- a/core/proto/OWNERS
+++ b/core/proto/OWNERS
@@ -14,6 +14,7 @@ per-file settings_enums.proto=tmfang@google.com
 # Frameworks
 ogunwale@google.com
 jjaggi@google.com
+per-file usagestatsservice.proto, usagestatsservice_v2.proto = mwachens@google.com
 
 # Launcher
 hyunyoungs@google.com