diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6e9c176eb0b..c3d53b8db65 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -169,6 +169,8 @@ if(CONFIG_CPLUSPLUS)
     set(STD_CPP_DIALECT_FLAGS $<TARGET_PROPERTY:compiler-cpp,dialect_cpp17>)
   elseif(CONFIG_STD_CPP20)
     set(STD_CPP_DIALECT_FLAGS $<TARGET_PROPERTY:compiler-cpp,dialect_cpp20>)
+  elseif(CONFIG_STD_CPP2B)
+    set(STD_CPP_DIALECT_FLAGS $<TARGET_PROPERTY:compiler-cpp,dialect_cpp2b>)
   else()
     assert(0 "Unreachable code. Expected C++ standard to have been chosen. See Kconfig.zephyr.")
   endif()
diff --git a/subsys/cpp/Kconfig b/subsys/cpp/Kconfig
index 8172ba9be8f..2faeb766e17 100644
--- a/subsys/cpp/Kconfig
+++ b/subsys/cpp/Kconfig
@@ -42,6 +42,11 @@ config STD_CPP20
 	help
 	  2020 C++ standard, previously known as C++2A.
 
+config STD_CPP2B
+	bool "C++ 2b"
+	help
+	  Next revision of the C++ standard, which is expected to be published in 2023.
+
 endchoice
 
 config LIB_CPLUSPLUS