diff --git a/debian/changelog b/debian/changelog
index 733dbb5..f63706e 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,6 +1,7 @@
 bluez-firmware (1.2-5) UNRELEASED; urgency=medium
 
   * Trim trailing whitespace.
+  * Upgrade to newer source format 3.0 (quilt).
 
  -- Debian Janitor <janitor@jelmer.uk>  Thu, 17 Jun 2021 09:52:43 -0000
 
diff --git a/debian/source/format b/debian/source/format
new file mode 100644
index 0000000..163aaf8
--- /dev/null
+++ b/debian/source/format
@@ -0,0 +1 @@
+3.0 (quilt)