diff --git a/marbles/core/marbles/core/VERSION b/marbles/core/marbles/core/VERSION
index ac454c6..34a8361 100644
--- a/marbles/core/marbles/core/VERSION
+++ b/marbles/core/marbles/core/VERSION
@@ -1 +1 @@
-0.12.0
+0.12.1
diff --git a/marbles/mixins/marbles/mixins/VERSION b/marbles/mixins/marbles/mixins/VERSION
index ac454c6..34a8361 100644
--- a/marbles/mixins/marbles/mixins/VERSION
+++ b/marbles/mixins/marbles/mixins/VERSION
@@ -1 +1 @@
-0.12.0
+0.12.1
diff --git a/setup.cfg b/setup.cfg
index ac15c98..b7aa3f0 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.12.0
+current_version = 0.12.1
 commit = True
 tag = False
 
diff --git a/setup.py b/setup.py
index ab45a31..d74187d 100644
--- a/setup.py
+++ b/setup.py
@@ -24,7 +24,7 @@
 from setuptools import setup
 
 
-version = '0.12.0'
+version = '0.12.1'
 url = 'https://github.com/twosigma/marbles'
 setup_dir = os.path.dirname(__file__)