diff --git a/notebook/_version.py b/notebook/_version.py
index 735c7093e..ca5aac3cb 100644
--- a/notebook/_version.py
+++ b/notebook/_version.py
@@ -5,7 +5,7 @@ store the current version info of the notebook.
 import re
 
 # Next beta (b)/ alpha (a)/ release candidate (rc) release: The version number for alpha is X.Y.ZaN
-__version__ = '5.7.14a0'
+__version__ = '5.7.14a0.dev'
 
 # Build up version_info tuple for backwards compatibility
 pattern = r'(?P<major>\d+).(?P<minor>\d+).(?P<patch>\d+)(?P<rest>.*)'