diff --git a/oauthenticator/_version.py b/oauthenticator/_version.py
index 6640f15c..c64fa089 100644
--- a/oauthenticator/_version.py
+++ b/oauthenticator/_version.py
@@ -5,9 +5,9 @@
 
 version_info = (
     0,
-    9,
+    10,
     0,
-    # 'dev',  # comment-out this line for a release
+    'dev',  # comment-out this line for a release
 )
 __version__ = '.'.join(map(str, version_info[:3]))