diff --git a/CHANGELOG.md b/CHANGELOG.md
index 55619d75..cd0d388b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,6 @@
 # Clixon Changelog
 
+* [5.6.0](#560) Expected: Matrch 2022
 * [5.5.0](#550) 20 January 2022
 * [5.4.0](#540) 30 November 2021
 * [5.3.0](#530) 27 September 2021
@@ -32,6 +33,9 @@
 * [3.3.2](#332) Aug 27 2017
 * [3.3.1](#331) June 7 2017
 
+## 5.6.0
+Expected: March 2022
+
 ## 5.5.0
 20 January 2022
 
diff --git a/configure b/configure
index bd04b64c..4a61ea8c 100755
--- a/configure
+++ b/configure
@@ -2265,9 +2265,9 @@ ac_configure="$SHELL $ac_aux_dir/configure"  # Please don't use this var.
 
 
 CLIXON_VERSION_MAJOR="5"
-CLIXON_VERSION_MINOR="5"
+CLIXON_VERSION_MINOR="6"
 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 d37f40d4..63e1adf3 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="5"
-CLIXON_VERSION_MINOR="5"
+CLIXON_VERSION_MINOR="6"
 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]),[