diff --git a/debian/changelog b/debian/changelog
index 8f49c65..0569b29 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+mkgmap (0.0.0+svn4909-1~exp2) UNRELEASED; urgency=medium
+
+  * Bump debhelper from old 12 to 13.
+
+ -- Debian Janitor <janitor@jelmer.uk>  Tue, 06 Jun 2023 15:34:46 -0000
+
 mkgmap (0.0.0+svn4909-1~exp1) experimental; urgency=medium
 
   * New upstream SVN snapshot.
diff --git a/debian/control b/debian/control
index 36bcb65..a31051e 100644
--- a/debian/control
+++ b/debian/control
@@ -7,7 +7,7 @@
 Section: utils
 Priority: optional
 Build-Depends: ant,
-               debhelper-compat (= 12),
+               debhelper-compat (= 13),
                default-jdk-headless (>= 2:1.8) | java8-sdk-headless,
                javahelper,
                libfastutil-java,