diff --git a/cpp/CMakeLists.txt b/cpp/CMakeLists.txt
index fac00c66a..db87c3fd5 100644
--- a/cpp/CMakeLists.txt
+++ b/cpp/CMakeLists.txt
@@ -29,6 +29,9 @@ project(
   LANGUAGES CXX CUDA C
 )
 
+# Disable C++20 module scanning as the codebase doesn't use modules
+set(CMAKE_CXX_SCAN_FOR_MODULES OFF CACHE BOOL "Disable C++20 module scanning")
+
 rapids_cmake_write_version_file(include/cuopt/version_config.hpp)
 # ##################################################################################################
 # - build type ------------------------------------------------------------------------------------
@@ -243,11 +246,12 @@ set_target_properties(cuopt
   INSTALL_RPATH "\$ORIGIN"
 
   # set target compile options
-  CXX_STANDARD 17
+  CXX_STANDARD 20
   CXX_STANDARD_REQUIRED ON
-  CUDA_STANDARD 17
+  CUDA_STANDARD 20
   CUDA_STANDARD_REQUIRED ON
   INTERFACE_POSITION_INDEPENDENT_CODE ON
+  CXX_SCAN_FOR_MODULES OFF
 )
 
 target_compile_definitions(cuopt PUBLIC "CUOPT_LOG_ACTIVE_LEVEL=RAPIDS_LOGGER_LOG_LEVEL_${LIBCUOPT_LOGGING_LEVEL}")
@@ -446,6 +450,14 @@ endif()
 
 if(NOT BUILD_LP_ONLY)
 add_executable(cuopt_cli cuopt_cli.cpp)
+
+set_target_properties(cuopt_cli
+  PROPERTIES
+  CXX_STANDARD 20
+  CXX_STANDARD_REQUIRED ON
+  CXX_SCAN_FOR_MODULES OFF
+)
+
 target_compile_options(cuopt_cli
   PRIVATE "$<$<COMPILE_LANGUAGE:CXX>:${CUOPT_CXX_FLAGS}>"
   "$<$<COMPILE_LANGUAGE:CUDA>:${CUOPT_CUDA_FLAGS}>"
@@ -486,6 +498,14 @@ endif()
 option(BUILD_MIP_BENCHMARKS "Build MIP benchmarks" OFF)
 if(BUILD_MIP_BENCHMARKS AND NOT BUILD_LP_ONLY)
   add_executable(solve_MIP ../benchmarks/linear_programming/cuopt/run_mip.cpp)
+
+  set_target_properties(solve_MIP
+    PROPERTIES
+    CXX_STANDARD 20
+    CXX_STANDARD_REQUIRED ON
+    CXX_SCAN_FOR_MODULES OFF
+  )
+
   target_compile_options(solve_MIP
     PRIVATE "$<$<COMPILE_LANGUAGE:CXX>:${CUOPT_CXX_FLAGS}>"
     "$<$<COMPILE_LANGUAGE:CUDA>:${CUOPT_CUDA_FLAGS}>"
@@ -510,6 +530,16 @@ endif()
 option(BUILD_LP_BENCHMARKS "Build LP benchmarks" OFF)
 if(BUILD_LP_BENCHMARKS)
   add_executable(solve_LP ../benchmarks/linear_programming/cuopt/run_pdlp.cu)
+
+  set_target_properties(solve_LP
+    PROPERTIES
+    CXX_STANDARD 20
+    CXX_STANDARD_REQUIRED ON
+    CUDA_STANDARD 20
+    CUDA_STANDARD_REQUIRED ON
+    CXX_SCAN_FOR_MODULES OFF
+  )
+
   target_compile_options(solve_LP
     PRIVATE "$<$<COMPILE_LANGUAGE:CXX>:${CUOPT_CXX_FLAGS}>"
     "$<$<COMPILE_LANGUAGE:CUDA>:${CUOPT_CUDA_FLAGS}>"
diff --git a/cpp/libmps_parser/CMakeLists.txt b/cpp/libmps_parser/CMakeLists.txt
index 9c96cc911..4fe497157 100644
--- a/cpp/libmps_parser/CMakeLists.txt
+++ b/cpp/libmps_parser/CMakeLists.txt
@@ -1,5 +1,5 @@
 # cmake-format: off
-# SPDX-FileCopyrightText: Copyright (c) 2024-2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+# SPDX-FileCopyrightText: Copyright (c) 2024-2026, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
 # SPDX-License-Identifier: Apache-2.0
 # cmake-format: on
 
@@ -16,6 +16,9 @@ project(
   LANGUAGES CXX
 )
 
+# Disable C++20 module scanning as the codebase doesn't use modules
+set(CMAKE_CXX_SCAN_FOR_MODULES OFF CACHE BOOL "Disable C++20 module scanning")
+
 # Write the version header
 rapids_cmake_write_version_file(include/mps_parser/version_config.hpp)
 
@@ -79,9 +82,10 @@ set_target_properties(mps_parser
   INSTALL_RPATH "\$ORIGIN"
 
   # set target compile options
-  CXX_STANDARD 17
+  CXX_STANDARD 20
   CXX_STANDARD_REQUIRED ON
   INTERFACE_POSITION_INDEPENDENT_CODE ON
+  CXX_SCAN_FOR_MODULES OFF
 )
 
 target_compile_options(mps_parser
diff --git a/cpp/libmps_parser/tests/CMakeLists.txt b/cpp/libmps_parser/tests/CMakeLists.txt
index 21fc02eb4..b39a09607 100644
--- a/cpp/libmps_parser/tests/CMakeLists.txt
+++ b/cpp/libmps_parser/tests/CMakeLists.txt
@@ -1,5 +1,5 @@
 # cmake-format: off
-# SPDX-FileCopyrightText: Copyright (c) 2024-2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+# SPDX-FileCopyrightText: Copyright (c) 2024-2026, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
 # SPDX-License-Identifier: Apache-2.0
 # cmake-format: on
 
@@ -13,9 +13,10 @@ function(ConfigureTest CMAKE_TEST_NAME)
     set_target_properties(${CMAKE_TEST_NAME}
         PROPERTIES
         # set target compile options
-        CXX_STANDARD 17
+        CXX_STANDARD 20
         CXX_STANDARD_REQUIRED ON
         INTERFACE_POSITION_INDEPENDENT_CODE ON
+        CXX_SCAN_FOR_MODULES OFF
         )
 
     target_include_directories(${CMAKE_TEST_NAME}
diff --git a/cpp/tests/examples/routing/CMakeLists.txt b/cpp/tests/examples/routing/CMakeLists.txt
index 97d96b7aa..a91a04957 100644
--- a/cpp/tests/examples/routing/CMakeLists.txt
+++ b/cpp/tests/examples/routing/CMakeLists.txt
@@ -1,5 +1,5 @@
 # cmake-format: off
-# SPDX-FileCopyrightText: Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+# SPDX-FileCopyrightText: Copyright (c) 2025-2026, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
 # SPDX-License-Identifier: Apache-2.0
 # cmake-format: on
 
@@ -17,7 +17,7 @@ set_target_properties(
   pdptw_mixed_fleet
   cvrp_daily_deliveries
   PROPERTIES
-  CUDA_STANDARD 17
+  CUDA_STANDARD 20
   CUDA_STANDARD_REQUIRED ON
 )