diff --git a/makefiles/protobuf.cmake b/makefiles/protobuf.cmake
index 42342c5..49e6eb1 100644
--- a/makefiles/protobuf.cmake
+++ b/makefiles/protobuf.cmake
@@ -21,6 +21,7 @@ set(PROTO_TARGETS
         ${CSGO_PROTO_DIR}/gameevents.proto
         ${CSGO_PROTO_DIR}/clientmessages.proto
         ${CSGO_PROTO_DIR}/te.proto
+        ${CSGO_PROTO_DIR}/valveextensions.proto
 )
 
 if(UNIX)