diff --git a/configure.in b/configure.in
index d4047f27def6f6f5685a40c8aa2ac4ff6a84306b..3b6fc5e44647b6e28e5b1fe998d090b5d9f16adf 100644
--- a/configure.in
+++ b/configure.in
@@ -1,6 +1,6 @@
 dnl Process this file with autoconf to produce a configure script.
 
-AC_INIT(graph-tool, 1.1.0)
+AC_INIT(graph-tool, 1.1.1devel)
 AC_CONFIG_SRCDIR(src/graph-tool)
 AM_INIT_AUTOMAKE
 AM_PROG_CC_C_O