diff --git a/debian/changelog b/debian/changelog
index 2430b73..9c83abc 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,10 @@
+java3d (1.5.2+dfsg-18) UNRELEASED; urgency=medium
+
+  * Bump debhelper from old 11 to 12.
+  * Set debhelper-compat version in Build-Depends.
+
+ -- Debian Janitor <janitor@jelmer.uk>  Wed, 16 Jun 2021 08:25:34 -0000
+
 java3d (1.5.2+dfsg-17) unstable; urgency=medium
 
   * Team upload.
diff --git a/debian/compat b/debian/compat
deleted file mode 100644
index b4de394..0000000
--- a/debian/compat
+++ /dev/null
@@ -1 +0,0 @@
-11
diff --git a/debian/control b/debian/control
index b0804c8..a3048c7 100644
--- a/debian/control
+++ b/debian/control
@@ -8,7 +8,7 @@ Uploaders:
  Torsten Werner <twerner@debian.org>
 Build-Depends:
  ant-optional,
- debhelper (>= 11),
+ debhelper-compat (= 12),
  default-jdk,
  javahelper,
  libgl1-mesa-dev,