diff --git a/debian/changelog b/debian/changelog
index 320867bf6933482fc84a69ae586424952c694aee..d5915723c686350330e642ad93fe7644d6613200 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,12 @@
+tycho2 (2-5) UNRELEASED; urgency=medium
+
+  * Trim trailing whitespace.
+  * Use secure URI in Homepage field.
+  * Bump debhelper from old 11 to 13.
+  * Set debhelper-compat version in Build-Depends.
+
+ -- Debian Janitor <janitor@jelmer.uk>  Sat, 11 Sep 2021 09:04:38 -0000
+
 tycho2 (2-4) unstable; urgency=low
 
   * Update VCS fields to use salsa.d.o
diff --git a/debian/compat b/debian/compat
deleted file mode 100644
index b4de3947675361a7770d29b8982c407b0ec6b2a0..0000000000000000000000000000000000000000
--- a/debian/compat
+++ /dev/null
@@ -1 +0,0 @@
-11
diff --git a/debian/control b/debian/control
index e0f92e9720f867202771a8f839127ae85a556514..e40e468b2669ccbafc3447b56f59f061307e6618 100644
--- a/debian/control
+++ b/debian/control
@@ -3,9 +3,9 @@ Section: science
 Priority: optional
 Maintainer: Debian Astronomy Team <debian-astro-maintainers@lists.alioth.debian.org>
 Uploaders: Ole Streicher <olebole@debian.org>
-Build-Depends: astrometry.net, debhelper (>= 11), python3, python3-astropy
+Build-Depends: astrometry.net, debhelper-compat (= 13), python3, python3-astropy
 Standards-Version: 4.2.1
-Homepage: http://www.astro.ku.dk/~erik/Tycho-2/
+Homepage: https://www.astro.ku.dk/~erik/Tycho-2/
 Vcs-Git: https://salsa.debian.org/debian-astro-team/tycho2.git
 Vcs-Browser: https://salsa.debian.org/debian-astro-team/tycho2
 
diff --git a/debian/rules b/debian/rules
index 2eef0087a642a4c27ae1346620f6cc869c643cd4..77ec193fca30e289578d72537ad163da3e87b95b 100755
--- a/debian/rules
+++ b/debian/rules
@@ -55,4 +55,3 @@ get-orig-source:
 	  && chmod 644 * \
 	  && tar cJvf ../tycho2_2.orig.tar.xz --owner=tycho2 --group=tycho2 * ) ; \
 	rm -rf tycho2-2
-