diff --git a/build/mkrelease b/build/mkrelease
index 906a78ab89..968dd08ac8 100755
--- a/build/mkrelease
+++ b/build/mkrelease
@@ -44,6 +44,13 @@ fi
 
 . $RELNAME/build/version.sh
 
+# Update the version for NT
+ed $RELNAME/include/portable.nt <<EOF
+/OPENLDAP_VERSION
+s;".*";"$ol_version";
+wq
+EOF
+
 tar cf $RELNAME.tar $RELNAME
 gzip -9 -c $RELNAME.tar > $RELNAME.tgz
 md5 $RELNAME.tgz > $RELNAME.md5