diff --git a/clang-tools-extra/clangd/index/remote/server/CMakeLists.txt b/clang-tools-extra/clangd/index/remote/server/CMakeLists.txt
--- a/clang-tools-extra/clangd/index/remote/server/CMakeLists.txt
+++ b/clang-tools-extra/clangd/index/remote/server/CMakeLists.txt
@@ -14,6 +14,7 @@
   clangDaemon
   clangdSupport
 
+  MonitoringServiceProto
   RemoteIndexProto
   RemoteIndexServiceProto
   clangdRemoteMarshalling