diff --git a/ChangeLog b/ChangeLog
index 0477aed..0bb5ed5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2012-11-23  Thomas Vander Stichele  <thomas at apestaart dot org>
+
+	* configure.ac:
+	  back to development.
+
 === release 0.1.3 ===
 
 2012-11-23  Thomas Vander Stichele  <thomas at apestaart dot org>
diff --git a/configure.ac b/configure.ac
index 219f52e..cf912f4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,7 @@
 dnl initialize autoconf
 dnl when going to/from release please remove/add the nano (fourth number)
 dnl releases only do Wall, trunk and prerelease does Werror too
-AC_INIT(morituri, 0.1.3,
+AC_INIT(morituri, 0.1.3.1,
    http://thomas.apestaart.org/morituri/trac/newticket,
    morituri)