diff --git a/configure b/configure
index 836b004..ffcc0f5 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.69 for RT/TTS T.83.6.
+# Generated by GNU Autoconf 2.69 for RT/TTS D.84.0.
 #
 # Report bugs to <felicity@loreley.flyingparchment.org.uk>.
 #
@@ -580,8 +580,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='RT/TTS'
 PACKAGE_TARNAME='rt-tts'
-PACKAGE_VERSION='T.83.6'
-PACKAGE_STRING='RT/TTS T.83.6'
+PACKAGE_VERSION='D.84.0'
+PACKAGE_STRING='RT/TTS D.84.0'
 PACKAGE_BUGREPORT='felicity@loreley.flyingparchment.org.uk'
 PACKAGE_URL=''
 
@@ -1232,7 +1232,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures RT/TTS T.83.6 to adapt to many kinds of systems.
+\`configure' configures RT/TTS D.84.0 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1293,7 +1293,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of RT/TTS T.83.6:";;
+     short | recursive ) echo "Configuration of RT/TTS D.84.0:";;
    esac
   cat <<\_ACEOF
 
@@ -1380,7 +1380,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-RT/TTS configure T.83.6
+RT/TTS configure D.84.0
 generated by GNU Autoconf 2.69
 
 Copyright (C) 2012 Free Software Foundation, Inc.
@@ -1749,7 +1749,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by RT/TTS $as_me T.83.6, which was
+It was created by RT/TTS $as_me D.84.0, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   $ $0 $@
@@ -4766,7 +4766,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by RT/TTS $as_me T.83.6, which was
+This file was extended by RT/TTS $as_me D.84.0, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -4828,7 +4828,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-RT/TTS config.status T.83.6
+RT/TTS config.status D.84.0
 configured by $0, generated by GNU Autoconf 2.69,
   with options \\"\$ac_cs_config\\"
 
diff --git a/configure.ac b/configure.ac
index dce8aa5..6d691a2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 AC_PREREQ([2.69])
-AC_INIT([RT/TTS], [T.83.6], [felicity@loreley.flyingparchment.org.uk])
+AC_INIT([RT/TTS], [D.84.0], [felicity@loreley.flyingparchment.org.uk])
 AC_CONFIG_SRCDIR([tts.c])
 AC_CONFIG_HEADERS([config.h])