diff --git a/ipykernel/_version.py b/ipykernel/_version.py
index 04e5a2ca4..ca224aba0 100644
--- a/ipykernel/_version.py
+++ b/ipykernel/_version.py
@@ -1,4 +1,4 @@
-version_info = (5, 1, 3)
+version_info = (5, 2, 0, 'dev')
 __version__ = '.'.join(map(str, version_info[:3]))
 
 # pep440 is annoying, beta/alpha/rc should _not_ have dots or pip/setuptools