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
@@ -9,6 +9,11 @@
   RemoteIndexServiceProto
   )
 
+if (ENABLE_GRPC_REFLECTION)
+  set(REFLECTION_LIBRARY grpc++_reflection)
+  add_definitions(-DENABLE_GRPC_REFLECTION)
+endif()
+
 target_link_libraries(clangd-index-server
   PRIVATE
   clangDaemon
@@ -17,4 +22,6 @@
   RemoteIndexProto
   RemoteIndexServiceProto
   clangdRemoteMarshalling
+
+  ${REFLECTION_LIBRARY}
   )
diff --git a/clang-tools-extra/clangd/index/remote/server/Server.cpp b/clang-tools-extra/clangd/index/remote/server/Server.cpp
--- a/clang-tools-extra/clangd/index/remote/server/Server.cpp
+++ b/clang-tools-extra/clangd/index/remote/server/Server.cpp
@@ -35,6 +35,10 @@
 #include <memory>
 #include <thread>
 
+#ifdef ENABLE_GRPC_REFLECTION
+#include <grpc++/ext/proto_server_reflection_plugin.h>
+#endif
+
 namespace clang {
 namespace clangd {
 namespace remote {
@@ -313,6 +317,9 @@
   RemoteIndexServer Service(Index, IndexRoot);
 
   grpc::EnableDefaultHealthCheckService(true);
+#ifdef ENABLE_GRPC_REFLECTION
+  grpc::reflection::InitProtoReflectionServerBuilderPlugin();
+#endif
   grpc::ServerBuilder Builder;
   Builder.AddListeningPort(ServerAddress.str(),
                            grpc::InsecureServerCredentials());
diff --git a/llvm/cmake/modules/FindGRPC.cmake b/llvm/cmake/modules/FindGRPC.cmake
--- a/llvm/cmake/modules/FindGRPC.cmake
+++ b/llvm/cmake/modules/FindGRPC.cmake
@@ -18,10 +18,14 @@
 
   # gRPC CMake CONFIG gives the libraries slightly odd names, make them match
   # the conventional system-installed names.
-  set_target_properties(protobuf::libprotobuf PROPERTIES IMPORTED_GLOBAL TRUE)
-  add_library(protobuf ALIAS protobuf::libprotobuf)
   set_target_properties(gRPC::grpc++ PROPERTIES IMPORTED_GLOBAL TRUE)
   add_library(grpc++ ALIAS gRPC::grpc++)
+  if (ENABLE_GRPC_REFLECTION)
+    set_target_properties(gRPC::grpc++_reflection PROPERTIES IMPORTED_GLOBAL TRUE)
+    add_library(grpc++_reflection ALIAS gRPC::grpc++_reflection)
+  endif()
+  set_target_properties(protobuf::libprotobuf PROPERTIES IMPORTED_GLOBAL TRUE)
+  add_library(protobuf ALIAS protobuf::libprotobuf)
 
   set(GRPC_CPP_PLUGIN $<TARGET_FILE:gRPC::grpc_cpp_plugin>)
   set(PROTOC ${Protobuf_PROTOC_EXECUTABLE})
@@ -71,6 +75,11 @@
   add_library(grpc++ UNKNOWN IMPORTED GLOBAL)
   message(STATUS "Using grpc++: " ${GRPC_LIBRARY})
   set_target_properties(grpc++ PROPERTIES IMPORTED_LOCATION ${GRPC_LIBRARY})
+  if (ENABLE_GRPC_REFLECTION)
+    find_library(GRPC_REFLECTION_LIBRARY grpc++_reflection $GRPC_OPTS REQUIRED)
+    add_library(grpc++_reflection UNKNOWN IMPORTED GLOBAL)
+    set_target_properties(grpc++_reflection PROPERTIES IMPORTED_LOCATION ${GRPC_REFLECTION_LIBRARY})
+  endif()
   find_library(PROTOBUF_LIBRARY protobuf $PROTOBUF_OPTS REQUIRED)
   message(STATUS "Using protobuf: " ${PROTOBUF_LIBRARY})
   add_library(protobuf UNKNOWN IMPORTED GLOBAL)