diff --git a/copulas/__init__.py b/copulas/__init__.py
index e59d1c27..2e0870e5 100644
--- a/copulas/__init__.py
+++ b/copulas/__init__.py
@@ -2,7 +2,7 @@
 
 __author__ = 'DataCebo, Inc.'
 __email__ = 'info@sdv.dev'
-__version__ = '0.12.0'
+__version__ = '0.12.1.dev0'
 
 import sys
 import warnings
diff --git a/pyproject.toml b/pyproject.toml
index a101763e..f5044dd5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -149,7 +149,7 @@ namespaces = false
 ]
 
 [tool.bumpversion]
-current_version = "0.12.0"
+current_version = "0.12.1.dev0"
 commit = true
 tag = true
 parse = '(?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)(\.(?P<release>[a-z]+)(?P<candidate>\d+))?'