debian/changelog

+abyss (2.1.5-3) unstable; urgency=medium
+
+  * Re-add armel architecture
+    Closes: #918735
+
+ -- Andreas Tille <tille@debian.org>  Wed, 09 Jan 2019 21:23:43 +0100
+
 abyss (2.1.5-2) unstable; urgency=medium
 
   * Restrict set of architectures to those where package is known to

debian/control

@@ -17,7 +17,7 @@ Vcs-Git: https://salsa.debian.org/med-team/abyss.git
 Homepage: http://www.bcgsc.ca/platform/bioinfo/software/abyss
 
 Package: abyss
-Architecture: any-amd64 arm64 armhf any-i386 mips64el mipsel ppc64el s390x alpha ia64 m68k powerpcspe ppc64 riscv64 sh4 sparc64 x32
+Architecture: any-amd64 arm64 armel armhf any-i386 mips64el mipsel ppc64el s390x alpha ia64 m68k powerpcspe ppc64 riscv64 sh4 sparc64 x32
 Depends: make,
          ${shlibs:Depends},
          ${misc:Depends},