diff --git a/debian/changelog b/debian/changelog
index c1fb1a4..d41712d 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -9,6 +9,7 @@
   * Updating copyright format url.
   * Running wrap-and-sort -bast.
   * Updating maintainer field.
+  * Updating standards version to 4.0.0.
 
  -- Ondřej Nový <novy@ondrej.org>  Sat, 09 Apr 2016 19:26:00 +0200
 
diff --git a/debian/control b/debian/control
index f9dcb2e..4810063 100644
--- a/debian/control
+++ b/debian/control
@@ -45,7 +45,7 @@
  python3-testtools (>= 1.4.0),
  subunit,
  testrepository,
-Standards-Version: 3.9.8
+Standards-Version: 4.0.0
 Vcs-Browser: https://anonscm.debian.org/cgit/openstack/clients/python-castellan.git
 Vcs-Git: https://anonscm.debian.org/git/openstack/clients/python-castellan.git
 Homepage: http://www.openstack.org/