diff --git a/configure.ac b/configure.ac
index fa7b59a5e1d69019ea1770ef91cb5efd3038dc80..11a8de5de1530f23259866164e75ab1e322c51b2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3,7 +3,7 @@ dnl Process this file with autoconf to produce a configure script.
 dnl graph-tool package version number
 m4_define(graph_tool_version_major, 2)
 m4_define(graph_tool_version_minor, 2)
-m4_define(graph_tool_version_micro, 26dev)
+m4_define(graph_tool_version_micro, 26)
 
 AC_INIT([graph-tool],[graph_tool_version_major().graph_tool_version_minor().graph_tool_version_micro()],[http://graph-tool.skewed.de])