diff --git a/debian/changelog b/debian/changelog
index 308e86f..b4a7c39 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,10 @@
+python-procrunner (1.1.0-2) UNRELEASED; urgency=medium
+
+  * Remove constraints unnecessary since buster:
+    + Build-Depends: Drop versioned constraint on debhelper.
+
+ -- Debian Janitor <janitor@jelmer.uk>  Mon, 06 Sep 2021 20:50:26 -0000
+
 python-procrunner (1.1.0-1) unstable; urgency=medium
 
   * First release (Closes: #962456)
diff --git a/debian/control b/debian/control
index 893cedf..b5d3d78 100644
--- a/debian/control
+++ b/debian/control
@@ -3,7 +3,7 @@
 Priority: optional
 Maintainer: Debian Science Maintainers <debian-science-maintainers@lists.alioth.debian.org>
 Uploaders: Sebastien Delafond <seb@debian.org>
-Build-Depends: debhelper (>= 12), dh-python, python3-setuptools, python3-all, python3-pytest-runner, python3-pytest, python3-mock
+Build-Depends: debhelper, dh-python, python3-setuptools, python3-all, python3-pytest-runner, python3-pytest, python3-mock
 Standards-Version: 4.5.0
 Homepage: https://github.com/DiamondLightSource/python-procrunner
 Vcs-Browser: https://salsa.debian.org/science-team/python-procrunner