diff --git a/gcc/doc/cpp.texi b/gcc/doc/cpp.texi
index 3de6e7aa737..3f38ca37fea 100644
--- a/gcc/doc/cpp.texi
+++ b/gcc/doc/cpp.texi
@@ -1886,8 +1886,8 @@ the 1999 revision of the C standard; the value @code{201112L}
 signifies the 2011 revision of the C standard; the value
 @code{201710L} signifies the 2017 revision of the C standard (which is
 otherwise identical to the 2011 version apart from correction of
-defects).  An unspecified value larger than @code{201710L} is used for
-the experimental @option{-std=c23} and @option{-std=gnu23} modes.
+defects).  The value @code{202311L} is used for the experimental
+@option{-std=c23} and @option{-std=gnu23} modes.
 
 This macro is not defined if the @option{-traditional-cpp} option is
 used, nor when compiling C++ or Objective-C@.
diff --git a/libcpp/init.cc b/libcpp/init.cc
index 54fc9236d38..c457fa659e7 100644
--- a/libcpp/init.cc
+++ b/libcpp/init.cc
@@ -594,7 +594,7 @@ cpp_init_builtins (cpp_reader *pfile, int hosted)
     _cpp_define_builtin (pfile, "__STDC_VERSION__ 199409L");
   else if (CPP_OPTION (pfile, lang) == CLK_STDC23
 	   || CPP_OPTION (pfile, lang) == CLK_GNUC23)
-    _cpp_define_builtin (pfile, "__STDC_VERSION__ 202000L");
+    _cpp_define_builtin (pfile, "__STDC_VERSION__ 202311L");
   else if (CPP_OPTION (pfile, lang) == CLK_STDC17
 	   || CPP_OPTION (pfile, lang) == CLK_GNUC17)
     _cpp_define_builtin (pfile, "__STDC_VERSION__ 201710L");