default service
diff --git a/tools/doxygen/Doxyfile.c++.internal b/tools/doxygen/Doxyfile.c++.internal
index ac20f0f..aa79aed 100644
--- a/tools/doxygen/Doxyfile.c++.internal
+++ b/tools/doxygen/Doxyfile.c++.internal
@@ -855,6 +855,7 @@
src/cpp/server/secure_server_credentials.h \
src/cpp/client/create_channel_internal.h \
src/cpp/common/channel_filter.h \
+src/cpp/server/default_health_check_service.h \
src/cpp/server/dynamic_thread_pool.h \
src/cpp/server/thread_pool_interface.h \
src/cpp/thread_manager/thread_manager.h \
@@ -883,7 +884,9 @@
src/cpp/common/version_cc.cc \
src/cpp/server/async_generic_service.cc \
src/cpp/server/create_default_thread_pool.cc \
+src/cpp/server/default_health_check_service.cc \
src/cpp/server/dynamic_thread_pool.cc \
+src/cpp/server/health_check_service.cc \
src/cpp/server/server_builder.cc \
src/cpp/server/server_cc.cc \
src/cpp/server/server_context.cc \