diff --git a/fnal_column_analysis_tools/version.py b/fnal_column_analysis_tools/version.py
index db9caffbf..182c8eeb5 100644
--- a/fnal_column_analysis_tools/version.py
+++ b/fnal_column_analysis_tools/version.py
@@ -30,7 +30,7 @@
 
 import re
 
-__version__ = "0.4.20"
+__version__ = "0.4.21"
 version = __version__
 version_info = tuple(re.split(r"[-\.]", __version__))