diff --git a/Modules/Compiler/Clang-C.cmake b/Modules/Compiler/Clang-C.cmake
index 1b765ad14d1b97e69c663bb9340b6fb335bbf2e0..480a5de705722b3186aa6a6ea24b67a4c4842943 100644
--- a/Modules/Compiler/Clang-C.cmake
+++ b/Modules/Compiler/Clang-C.cmake
@@ -48,7 +48,10 @@ if("x${CMAKE_C_COMPILER_FRONTEND_VARIANT}" STREQUAL "xGNU")
     set(CMAKE_C17_EXTENSION_COMPILE_OPTION "-std=gnu17")
   endif()
 
-  if(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 9.0)
+  if(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 18.0)
+    set(CMAKE_C23_STANDARD_COMPILE_OPTION "-std=c23")
+    set(CMAKE_C23_EXTENSION_COMPILE_OPTION "-std=gnu23")
+  elseif(CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL 9.0)
     set(CMAKE_C23_STANDARD_COMPILE_OPTION "-std=c2x")
     set(CMAKE_C23_EXTENSION_COMPILE_OPTION "-std=gnu2x")
   endif()