diff --git a/debian/changelog b/debian/changelog
index 7dac4cfc58d16c4f3583ece516ca07ec0141248a..917cc3e5664d18af4919bc70779aced215652798 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+python-msrest (0.6.21-2) UNRELEASED; urgency=medium
+
+  * Bump debhelper from old 12 to 13.
+
+ -- Debian Janitor <janitor@jelmer.uk>  Thu, 26 Aug 2021 07:20:07 -0000
+
 python-msrest (0.6.21-1) unstable; urgency=medium
 
   * Team upload.
diff --git a/debian/control b/debian/control
index f2dd1e03104cda77dedb2b9209b91d27ec5ffa3d..7b42b8582d56408044b425c6a104123b52908b1f 100644
--- a/debian/control
+++ b/debian/control
@@ -4,7 +4,7 @@ Uploaders: Antoine R. Dumont (@ardumont) <antoine.romain.dumont@gmail.com>,
            Nicolas Dandrimont <olasd@debian.org>
 Section: python
 Priority: optional
-Build-Depends: debhelper-compat (= 12),
+Build-Depends: debhelper-compat (= 13),
                dh-python,
                python3-aiohttp (>= 3),
                python3-aiodns,