diff --git a/CMakeLists.txt b/CMakeLists.txt
index b5333168..5052347a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-# Copyright 2020-2025, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+# Copyright 2020-2026, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
@@ -61,6 +61,7 @@ set(TRITON_REPO_ORGANIZATION "https://github.com/triton-inference-server" CACHE
 set(TRITON_COMMON_REPO_TAG "main" CACHE STRING "Tag for triton-inference-server/common repo")
 set(TRITON_CORE_REPO_TAG "main" CACHE STRING "Tag for triton-inference-server/core repo")
 set(TRITON_CLIENT_REPO_TAG "main" CACHE STRING "Tag for triton-inference-server/core repo")
+set(TRITON_THIRD_PARTY_REPO_TAG "main" CACHE STRING "Tag for triton-inference-server/third_party repo")
 
 #
 # Install locations
@@ -97,6 +98,7 @@ ExternalProject_Add(
       -DTRITON_REPO_ORGANIZATION:STRING=${TRITON_REPO_ORGANIZATION}
       -DTRITON_CORE_REPO_TAG:STRING=${TRITON_CORE_REPO_TAG}
       -DTRITON_COMMON_REPO_TAG:STRING=${TRITON_COMMON_REPO_TAG}
+      -DTRITON_THIRD_PARTY_REPO_TAG:STRING=${TRITON_THIRD_PARTY_REPO_TAG}
       -DTRITON_ENABLE_CC_HTTP:BOOL=${TRITON_ENABLE_CC_HTTP}
       -DTRITON_ENABLE_CC_GRPC:BOOL=${TRITON_ENABLE_CC_GRPC}
       -DTRITON_ENABLE_PYTHON_HTTP:BOOL=OFF
@@ -159,6 +161,7 @@ if(TRITON_ENABLE_PYTHON_HTTP OR TRITON_ENABLE_PYTHON_GRPC)
         -DTRITON_REPO_ORGANIZATION:STRING=${TRITON_REPO_ORGANIZATION}
         -DTRITON_CORE_REPO_TAG:STRING=${TRITON_CORE_REPO_TAG}
         -DTRITON_COMMON_REPO_TAG:STRING=${TRITON_COMMON_REPO_TAG}
+        -DTRITON_THIRD_PARTY_REPO_TAG:STRING=${TRITON_THIRD_PARTY_REPO_TAG}
         -DTRITON_ENABLE_CC_HTTP:BOOL=OFF
         -DTRITON_ENABLE_CC_GRPC:BOOL=OFF
 	      -DTRITON_ENABLE_EXAMPLES:BOOL=ON
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index ae5f56e9..619a3b27 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,4 +1,4 @@
-# Copyright 2020-2025, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+# Copyright 2020-2026, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
@@ -28,6 +28,16 @@ cmake_minimum_required (VERSION 3.31.8)
 
 project(perf-analyzer LANGUAGES C CXX)
 
+# Compile every target at the same standard the third-party stack was
+# built with. The abseil install pins its options (e.g. C++20
+# std-ordering types) to the standard used at build time, so targets
+# that fall back to the compiler default standard fail to compile
+# against its headers.
+if(TRITON_MIN_CXX_STANDARD)
+  set(CMAKE_CXX_STANDARD ${TRITON_MIN_CXX_STANDARD})
+  set(CMAKE_CXX_STANDARD_REQUIRED ON)
+endif()
+
 #
 # Perf Analyzer Options
 #
@@ -53,8 +63,12 @@ set(TRITON_CORE_REPO_TAG "main" CACHE STRING "Tag for triton-inference-server/co
 # Install locations
 set(TRITON_THIRD_PARTY_INSTALL_PREFIX "${CMAKE_CURRENT_BINARY_DIR}/third-party-install" CACHE STRING "Location of third-party build")
 
-# Add third party installation to the search path
-set(CMAKE_PREFIX_PATH ${TRITON_THIRD_PARTY_INSTALL_PREFIX} ${CMAKE_PREFIX_PATH})
+# Add third party installation to the search path. The protobuf install
+# tree is listed as its own prefix so that the utf8_range package config
+# it nests (required by protobuf-config since protobuf v33) is found.
+set(CMAKE_PREFIX_PATH
+    ${TRITON_THIRD_PARTY_INSTALL_PREFIX}
+    "${TRITON_THIRD_PARTY_INSTALL_PREFIX}/protobuf" ${CMAKE_PREFIX_PATH})
 
 # Triton CC Client Libraries
 find_library(TRITON_HTTP_STATIC_LIB
diff --git a/src/client_backend/tensorflow_serving/tfserve_client_backend.cc b/src/client_backend/tensorflow_serving/tfserve_client_backend.cc
index 95147bbd..38243565 100644
--- a/src/client_backend/tensorflow_serving/tfserve_client_backend.cc
+++ b/src/client_backend/tensorflow_serving/tfserve_client_backend.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2020, NVIDIA CORPORATION. All rights reserved.
+// Copyright (c) 2020-2026, NVIDIA CORPORATION. All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions
@@ -67,7 +67,7 @@ TFServeClientBackend::ModelMetadata(
   std::string metadata;
   ::google::protobuf::util::JsonPrintOptions options;
   options.preserve_proto_field_names = true;
-  options.always_print_primitive_fields = true;
+  options.always_print_fields_with_no_presence = true;
   ::google::protobuf::util::MessageToJsonString(
       metadata_proto, &metadata, options);
 
diff --git a/src/client_backend/triton/triton_client_backend.cc b/src/client_backend/triton/triton_client_backend.cc
index 40ce3489..78f0037b 100644
--- a/src/client_backend/triton/triton_client_backend.cc
+++ b/src/client_backend/triton/triton_client_backend.cc
@@ -1,4 +1,4 @@
-// Copyright 2020-2025, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+// Copyright 2020-2026, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions
@@ -190,7 +190,7 @@ TritonClientBackend::ModelMetadata(
     std::string metadata;
     ::google::protobuf::util::JsonPrintOptions options;
     options.preserve_proto_field_names = true;
-    options.always_print_primitive_fields = true;
+    options.always_print_fields_with_no_presence = true;
     ::google::protobuf::util::MessageToJsonString(
         model_metadata_proto, &metadata, options);
 
@@ -218,7 +218,7 @@ TritonClientBackend::ModelConfig(
     std::string config;
     ::google::protobuf::util::JsonPrintOptions options;
     options.preserve_proto_field_names = true;
-    options.always_print_primitive_fields = true;
+    options.always_print_fields_with_no_presence = true;
     ::google::protobuf::util::MessageToJsonString(
         model_config_proto, &config, options);