diff --git a/src/arch/zephyr/README.md b/src/arch/zephyr/README.md
index 05111c93..d7389547 100644
--- a/src/arch/zephyr/README.md
+++ b/src/arch/zephyr/README.md
@@ -88,14 +88,16 @@ CONFIG_LOG_MODE_IMMEDIATE=n
 CONFIG_LOG_BACKEND_UART=n
 CONFIG_SHELL_LOG_BACKEND=y
 
+# For C library support
+CONFIG_NEWLIB_LIBC=y
+CONFIG_NEWLIB_LIBC_FLOAT_PRINTF=y
+
 # For C++ standard library support
-CONFIG_COMPILER_OPT="-Werror"
-CONFIG_POSIX_CLOCK=y
 CONFIG_CPP=y
-CONFIG_GLIBCXX_LIBCPP=y
 CONFIG_STD_CPP20=y
-CONFIG_NEWLIB_LIBC=y
-CONFIG_NEWLIB_LIBC_FLOAT_PRINTF=y
+CONFIG_REQUIRES_FULL_LIBCPP=y
+CONFIG_COMPILER_OPT="-Werror"
+CONFIG_POSIX_CLOCK=y
 
 # Dynamic thread creation for 4diac FORTE
 CONFIG_DYNAMIC_THREAD=y