diff --git a/configure b/configure
index 8e8d00ff..3b797862 100755
--- a/configure
+++ b/configure
@@ -2274,9 +2274,9 @@ ac_configure="$SHELL $ac_aux_dir/configure"  # Please don't use this var.
 
 
 CLIXON_VERSION_MAJOR="6"
-CLIXON_VERSION_MINOR="0"
+CLIXON_VERSION_MINOR="1"
 CLIXON_VERSION_PATCH="0"
-CLIXON_VERSION="\"${CLIXON_VERSION_MAJOR}.${CLIXON_VERSION_MINOR}.${CLIXON_VERSION_PATCH}\""
+CLIXON_VERSION="\"${CLIXON_VERSION_MAJOR}.${CLIXON_VERSION_MINOR}.${CLIXON_VERSION_PATCH}.PRE\""
 
 # Debug flag
 # Check whether --enable-debug was given.
diff --git a/configure.ac b/configure.ac
index 4b8a6917..461b0fee 100644
--- a/configure.ac
+++ b/configure.ac
@@ -48,9 +48,9 @@ AC_INIT(lib/clixon/clixon.h.in)
 AC_CONFIG_AUX_DIR(config-aux)
 
 CLIXON_VERSION_MAJOR="6"
-CLIXON_VERSION_MINOR="0"
+CLIXON_VERSION_MINOR="1"
 CLIXON_VERSION_PATCH="0"
-CLIXON_VERSION="\"${CLIXON_VERSION_MAJOR}.${CLIXON_VERSION_MINOR}.${CLIXON_VERSION_PATCH}\""
+CLIXON_VERSION="\"${CLIXON_VERSION_MAJOR}.${CLIXON_VERSION_MINOR}.${CLIXON_VERSION_PATCH}.PRE\""
 
 # Debug flag
 AC_ARG_ENABLE(debug, AS_HELP_STRING([--enable-debug],[Build with debug symbols, default: no]),[