diff --git a/debian/compat b/debian/compat
index 7ed6ff8..ec63514 100644
--- a/debian/compat
+++ b/debian/compat
@@ -1 +1 @@
-5
+9
diff --git a/debian/control b/debian/control
index 5cb931b..ade9642 100644
--- a/debian/control
+++ b/debian/control
@@ -2,7 +2,7 @@ Source: domcheck
 Section: admin
 Priority: optional
 Maintainer: Dominique Fournier <dominique@fournier38.fr>
-Build-Depends: debhelper (>= 5.0.0)
+Build-Depends: debhelper (>= 4.0.0)
 Standards-Version: 3.9.8
 
 Package: domcheck