debian/changelog

+diamond-aligner (0.9.23+dfsg-2) unstable; urgency=medium
+
+  * Restrict architecture to amd64
+    Closes: #916370
+
+ -- Andreas Tille <tille@debian.org>  Thu, 13 Dec 2018 19:52:54 +0100
+
 diamond-aligner (0.9.23+dfsg-1) unstable; urgency=medium
 
   * New upstream version

debian/control

@@ -12,7 +12,7 @@ Vcs-Git: https://salsa.debian.org/med-team/diamond-aligner.git
 Homepage: https://github.com/bbuchfink/diamond
 
 Package: diamond-aligner
-Architecture: any
+Architecture: amd64
 Depends: ${shlibs:Depends},
          ${misc:Depends}
 Recommends: med-config (>= 2.1)