diff --git a/debian/changelog b/debian/changelog
index 6e7a734..fdb5e37 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -8,6 +8,7 @@
   * Bump debhelper compatibility to 10. Update versioned b-d accordingly.
   * Rewrite debian/rules in minimal dh v7 style.
     + Use files debian/install and debian/manpages instead of overrides.
+  * Switch to source format "3.0 (native)"
 
  -- Axel Beckert <abe@debian.org>  Sat, 08 Oct 2016 00:33:40 +0200
 
diff --git a/debian/source/format b/debian/source/format
new file mode 100644
index 0000000..89ae9db
--- /dev/null
+++ b/debian/source/format
@@ -0,0 +1 @@
+3.0 (native)