introduced workaround for proto_utils
diff --git a/tools/doxygen/Doxyfile.c++.internal b/tools/doxygen/Doxyfile.c++.internal
index a285310..bb4058f 100644
--- a/tools/doxygen/Doxyfile.c++.internal
+++ b/tools/doxygen/Doxyfile.c++.internal
@@ -858,6 +858,7 @@
 src/cpp/common/channel_arguments.cc \
 src/cpp/common/completion_queue.cc \
 src/cpp/common/rpc_method.cc \
+src/cpp/proto/proto_serializer.cc \
 src/cpp/proto/proto_utils.cc \
 src/cpp/server/async_generic_service.cc \
 src/cpp/server/create_default_thread_pool.cc \
diff --git a/tools/run_tests/sources_and_headers.json b/tools/run_tests/sources_and_headers.json
index 0c7a6c7..65666e3 100644
--- a/tools/run_tests/sources_and_headers.json
+++ b/tools/run_tests/sources_and_headers.json
@@ -5051,6 +5051,7 @@
       "src/cpp/common/secure_auth_context.h", 
       "src/cpp/common/secure_channel_arguments.cc", 
       "src/cpp/common/secure_create_auth_context.cc", 
+      "src/cpp/proto/proto_serializer.cc", 
       "src/cpp/proto/proto_utils.cc", 
       "src/cpp/server/async_generic_service.cc", 
       "src/cpp/server/create_default_thread_pool.cc", 
@@ -5305,6 +5306,7 @@
       "src/cpp/common/create_auth_context.h", 
       "src/cpp/common/insecure_create_auth_context.cc", 
       "src/cpp/common/rpc_method.cc", 
+      "src/cpp/proto/proto_serializer.cc", 
       "src/cpp/proto/proto_utils.cc", 
       "src/cpp/server/async_generic_service.cc", 
       "src/cpp/server/create_default_thread_pool.cc",