diff --git a/configure.ac b/configure.ac
index 3d9564b..e7308a8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,7 +2,7 @@
 # Process this file with autoconf to produce a configure script.
 
 AC_PREREQ([2.69])
-AC_INIT([trexio], [1.0.0], [https://github.com/TREX-CoE/trexio/issues])
+AC_INIT([trexio], [1.1.0], [https://github.com/TREX-CoE/trexio/issues])
 AM_INIT_AUTOMAKE([subdir-objects color-tests parallel-tests silent-rules 1.11])
 AM_MAINTAINER_MODE()
 LT_PREREQ([2.2])