diff --git a/dev-tools/release.sh b/dev-tools/release.sh
index 6d48004852d67e8b5ba2220f1642c9d6d64ba62c..375e041cafc00a4b1c0fde048b8401113e319b75 100755
--- a/dev-tools/release.sh
+++ b/dev-tools/release.sh
@@ -1,7 +1,7 @@
 #!/bin/sh -x
 
 tempdir=$HOME/Downloads
-version=5.2.0
+version=5.2.1
 
 # make sure there is no locale setting creating unneeded differences.
 LC_ALL=C
@@ -11,7 +11,7 @@ mkdir $tempdir
 cd $tempdir
 /bin/rm -rf espresso/ espresso-$version
 # get the svn copy
-svn checkout http://qeforge.qe-forge.org/svn/q-e/tags/QE-5-2-0/espresso
+svn checkout http://qeforge.qe-forge.org/svn/q-e/tags/QE-5-2-1/espresso
 mv espresso/ espresso-$version/
 
 cd espresso-$version
diff --git a/install/configure b/install/configure
index 02269f16b92ee7d842cb9116477d8c217b2d1935..523b525978e4b6cc76e4dea8828b279a480b43f0 100755
--- a/install/configure
+++ b/install/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.63 for ESPRESSO 5.2.0.
+# Generated by GNU Autoconf 2.63 for ESPRESSO 5.2.1.
 #
 # Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
 # 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
@@ -594,8 +594,8 @@ SHELL=${CONFIG_SHELL-/bin/sh}
 # Identity of this package.
 PACKAGE_NAME='ESPRESSO'
 PACKAGE_TARNAME='espresso'
-PACKAGE_VERSION='5.2.0'
-PACKAGE_STRING='ESPRESSO 5.2.0'
+PACKAGE_VERSION='5.2.1'
+PACKAGE_STRING='ESPRESSO 5.2.1'
 PACKAGE_BUGREPORT=''
 
 ac_default_prefix="\$(INSTALLDIR)"
@@ -1322,7 +1322,7 @@ 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 ESPRESSO 5.2.0 to adapt to many kinds of systems.
+\`configure' configures ESPRESSO 5.2.1 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1386,7 +1386,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of ESPRESSO 5.2.0:";;
+     short | recursive ) echo "Configuration of ESPRESSO 5.2.1:";;
    esac
   cat <<\_ACEOF
 
@@ -1498,7 +1498,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-ESPRESSO configure 5.2.0
+ESPRESSO configure 5.2.1
 generated by GNU Autoconf 2.63
 
 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
@@ -1512,7 +1512,7 @@ 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 ESPRESSO $as_me 5.2.0, which was
+It was created by ESPRESSO $as_me 5.2.1, which was
 generated by GNU Autoconf 2.63.  Invocation command line was
 
   $ $0 $@
@@ -12263,7 +12263,7 @@ exec 6>&1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by ESPRESSO $as_me 5.2.0, which was
+This file was extended by ESPRESSO $as_me 5.2.1, which was
 generated by GNU Autoconf 2.63.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -12322,7 +12322,7 @@ Report bugs to <bug-autoconf@gnu.org>."
 _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_version="\\
-ESPRESSO config.status 5.2.0
+ESPRESSO config.status 5.2.1
 configured by $0, generated by GNU Autoconf 2.63,
   with options \\"`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`\\"
 
diff --git a/install/configure.ac b/install/configure.ac
index dee65046d25f5a01783e5970bc7c3b5f6abb17fb..2645ccc4deea758f614ec45d55a77089df72b3c7 100644
--- a/install/configure.ac
+++ b/install/configure.ac
@@ -1,4 +1,4 @@
-AC_INIT(ESPRESSO, 5.2.0, , espresso)
+AC_INIT(ESPRESSO, 5.2.1, , espresso)
 # ----------------------------
 # Non-standard precious variables
 # ----------------------------