diff --git a/debian/changelog b/debian/changelog
index 6d8c0d9..a26c7c2 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,10 @@
+kmc (2.3+dfsg-9) UNRELEASED; urgency=low
+
+  * Apply multi-arch hints.
+    + libkmc-dev: Add Multi-Arch: same.
+
+ -- Debian Janitor <janitor@jelmer.uk>  Fri, 11 Sep 2020 18:20:06 -0000
+
 kmc (2.3+dfsg-8) unstable; urgency=medium
 
   * Add ref to conda (Thanks Steffen Moeller).
diff --git a/debian/control b/debian/control
index eb94bd5..202230e 100644
--- a/debian/control
+++ b/debian/control
@@ -50,6 +50,7 @@ Architecture: any
 Section: libdevel
 Depends: ${shlibs:Depends},
          ${misc:Depends}
+Multi-Arch: same
 Description: library to access KMC k-mer count files
  The kmc software is designed for counting k-mers (sequences of
  consecutive k symbols) in a set of reads. K-mer counting is