diff --git a/debian/changelog b/debian/changelog
index b057f142..9cdf8cf1 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+python-botocore (0.52.0-1) UNRELEASED; urgency=medium
+
+  * New upstream release
+
+ -- TANIGUCHI Takaki <takaki@debian.org>  Sun, 22 Jun 2014 19:08:06 +0900
+
 python-botocore (0.29.0+repack-2) unstable; urgency=medium
 
   * debian/watch: Add debian version mangle.