diff --git a/CMakeLists.txt b/CMakeLists.txt
index 579f6668..7a170d31 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -39,9 +39,9 @@ set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-O3 -g -DNDEBUG")
 set(CMAKE_CXX_FLAGS_RELEASE "-O3 -DNDEBUG")
 set(CMAKE_CXX_FLAGS_DEBUG "-O0 -g")
 
-set(CMAKE_CXX_STANDARD 17 CACHE STRING "")
+set(CMAKE_CXX_STANDARD 20 CACHE STRING "")
 
-if(NOT CMAKE_CXX_STANDARD MATCHES "14|17|20")
+if(NOT CMAKE_CXX_STANDARD MATCHES "20|23")
   message(FATAL_ERROR "Unsupported C++ standard: ${CMAKE_CXX_STANDARD}")
 endif()