diff --git a/chapter06/coreutils.xml b/chapter06/coreutils.xml
index bbea2f1c4..d3afe3918 100644
--- a/chapter06/coreutils.xml
+++ b/chapter06/coreutils.xml
@@ -66,6 +66,14 @@
           Perl test suite.</para>
         </listitem>
       </varlistentry>
+
+      <varlistentry>
+        <term><envar>gl_cv_macro_MB_CUR_MAX_good=y</envar></term>
+        <listitem>
+          <para>This is needed to work around an issue in the gnulib copy
+          shipped by the package which would break cross compilation.</para>
+        </listitem>
+      </varlistentry>
     </variablelist>
 
     <para>Compile the package:</para>
diff --git a/packages.ent b/packages.ent
index 2a9665b80..2ab3d0e8b 100644
--- a/packages.ent
+++ b/packages.ent
@@ -238,7 +238,7 @@
 <!ENTITY gcc-fin-du "5.1 GB ">
 <!ENTITY gcc-fin-sbu "43 SBU (with tests)">
 <!ENTITY libquadmath-version "0.0.0">
-<!ENTITY libstdcpp-version   "6.0.30">
+<!ENTITY libstdcpp-version   "6.0.31">
 <!ENTITY libitm-version      "1.0.0">
 <!ENTITY libatomic-version   "1.2.0">