diff --git a/ChangeLog b/ChangeLog
index 31fdbcd..2ca1207 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+1.1.1 (unreleased)
+------------------
+
+- Nothing changed yet.
+
+
 1.1.0 (2021-04-29)
 ------------------
 
diff --git a/setup.cfg b/setup.cfg
index 8640c2f..e4a69c9 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,6 +1,6 @@
 [metadata]
 name = xworkflows
-version = 1.1.0
+version = 1.1.1.dev0
 description = A library implementing workflows (or state machines) for Python projects.
 long_description = file: README.rst
 # https://docutils.sourceforge.io/FAQ.html#what-s-the-official-mime-type-for-restructuredtext-data