diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3b9297fc..ac7ee671 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,11 @@
 Changelog
 =========
 
+0.33.1rc1
+---------
+
+-  (#434)
+
 0.33.0
 ------
 
diff --git a/simpleflow/__init__.py b/simpleflow/__init__.py
index 9d0f5814..51ea4b42 100644
--- a/simpleflow/__init__.py
+++ b/simpleflow/__init__.py
@@ -5,6 +5,6 @@
 from .signal import WaitForSignal  # NOQA
 from .workflow import Workflow  # NOQA
 
-__version__ = "0.33.0"
+__version__ = "0.33.1rc1"
 __author__ = "Greg Leclercq"
 __license__ = "MIT"