diff --git a/debian/changelog b/debian/changelog
index 407196e..62f24e6 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+lightdm-gtk-greeter-settings (1.2.2-5) UNRELEASED; urgency=medium
+
+  * Update watch file format version to 4.
+
+ -- Debian Janitor <janitor@jelmer.uk>  Tue, 24 Aug 2021 04:07:23 -0000
+
 lightdm-gtk-greeter-settings (1.2.2-4) unstable; urgency=medium
 
   [ Debian Janitor ]
diff --git a/debian/watch b/debian/watch
index 27049aa..6df6f59 100644
--- a/debian/watch
+++ b/debian/watch
@@ -1,2 +1,2 @@
-version=3
+version=4
 https://launchpad.net/lightdm-gtk-greeter-settings/+download .*/lightdm-gtk-greeter-settings-([0-9.]+)\.tar\.gz