diff --git a/bazel/cc_toolchains/clang_cc_toolchain_config.bzl b/bazel/cc_toolchains/clang_cc_toolchain_config.bzl
index 3aeea1593a9f..509e2f3b8bf5 100644
--- a/bazel/cc_toolchains/clang_cc_toolchain_config.bzl
+++ b/bazel/cc_toolchains/clang_cc_toolchain_config.bzl
@@ -653,13 +653,13 @@ def _impl(ctx):
         )],
     )
 
-    # Clang HARDENED_MODE has 4 possible values:
-    # https://releases.llvm.org/18.1.0/projects/libcxx/docs/Hardening.html#hardening-modes
+    # Clang HARDENING_MODE has 4 possible values:
+    # https://libcxx.llvm.org/Hardening.html#notes-for-users
     libcpp_debug_flags = [
-        "-D_LIBCPP_ENABLE_HARDENED_MODE=_LIBCPP_HARDENING_MODE_EXTENSIVE",
+        "-D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_DEBUG",
     ]
     libcpp_release_flags = [
-        "-D_LIBCPP_ENABLE_HARDENED_MODE=_LIBCPP_HARDENING_MODE_FAST",
+        "-D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_FAST",
     ]
 
     linux_flags_feature = feature(