diff --git a/qse/configure b/qse/configure
index ec09a9dc..e1b99305 100755
--- a/qse/configure
+++ b/qse/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.65 for qse 0.5.4.
+# Generated by GNU Autoconf 2.65 for qse 0.5.5.
 #
 # Report bugs to <Chung, Hyung-Hwan (hyunghwan.chung@gmail.com)>.
 #
@@ -701,8 +701,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='qse'
 PACKAGE_TARNAME='qse'
-PACKAGE_VERSION='0.5.4'
-PACKAGE_STRING='qse 0.5.4'
+PACKAGE_VERSION='0.5.5'
+PACKAGE_STRING='qse 0.5.5'
 PACKAGE_BUGREPORT='Chung, Hyung-Hwan (hyunghwan.chung@gmail.com)'
 PACKAGE_URL='http://qse.googlecode.com'
 
@@ -1462,7 +1462,7 @@ 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 qse 0.5.4 to adapt to many kinds of systems.
+\`configure' configures qse 0.5.5 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1532,7 +1532,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of qse 0.5.4:";;
+     short | recursive ) echo "Configuration of qse 0.5.5:";;
    esac
   cat <<\_ACEOF
 
@@ -1647,7 +1647,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-qse configure 0.5.4
+qse configure 0.5.5
 generated by GNU Autoconf 2.65
 
 Copyright (C) 2009 Free Software Foundation, Inc.
@@ -2409,7 +2409,7 @@ 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 qse $as_me 0.5.4, which was
+It was created by qse $as_me 0.5.5, which was
 generated by GNU Autoconf 2.65.  Invocation command line was
 
   $ $0 $@
@@ -3228,7 +3228,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE='qse'
- VERSION='0.5.4'
+ VERSION='0.5.5'
 
 
 cat >>confdefs.h <<_ACEOF
@@ -18033,7 +18033,7 @@ 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 qse $as_me 0.5.4, which was
+This file was extended by qse $as_me 0.5.5, which was
 generated by GNU Autoconf 2.65.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -18100,7 +18100,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-qse config.status 0.5.4
+qse config.status 0.5.5
 configured by $0, generated by GNU Autoconf 2.65,
   with options \\"\$ac_cs_config\\"
 
diff --git a/qse/configure.ac b/qse/configure.ac
index 83182785..d64214a7 100644
--- a/qse/configure.ac
+++ b/qse/configure.ac
@@ -1,7 +1,7 @@
 
 dnl AC_PREREQ(2.59)
 
-AC_INIT([qse],[0.5.4],[Chung, Hyung-Hwan (hyunghwan.chung@gmail.com)],,[http://qse.googlecode.com])
+AC_INIT([qse],[0.5.5],[Chung, Hyung-Hwan (hyunghwan.chung@gmail.com)],,[http://qse.googlecode.com])
 AC_CONFIG_HEADER([include/qse/config.h])
 AC_CONFIG_AUX_DIR([ac/au])
 AC_CONFIG_MACRO_DIR([ac/m4])