diff --git a/configure.ac b/configure.ac
index ffade50..700ea32 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,7 @@
 
 AC_PREREQ([2.65])
 # 5 argument version only available with aclocal >= 2.64
-AC_INIT([IntaRNA], [3.2.2], [], [intaRNA], [http://www.bioinf.uni-freiburg.de] )
+AC_INIT([IntaRNA], [3.3.0], [], [intaRNA], [http://www.bioinf.uni-freiburg.de] )
 
 # minimal required version of the boost library 
 BOOST_REQUIRED_VERSION=1.50.0