diff --git a/configure.ac b/configure.ac
index fb9f626..55b705d 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], [1.1.0], [https://github.com/TREX-CoE/trexio/issues])
+AC_INIT([trexio], [2.0.0], [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])
diff --git a/python/pytrexio/_version.py b/python/pytrexio/_version.py
index 3dc1f76..5becc17 100644
--- a/python/pytrexio/_version.py
+++ b/python/pytrexio/_version.py
@@ -1 +1 @@
-__version__ = "0.1.0"
+__version__ = "1.0.0"