diff --git a/debian/changelog b/debian/changelog
index e6cfc7a4..44d65504 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,16 @@
+notmuch (0.21-3) unstable; urgency=medium
+
+  * Add mips and mips64el to gdb build-dep blacklist
+
+ -- David Bremner <bremner@debian.org>  Sat, 14 Nov 2015 19:07:06 -0400
+
+notmuch (0.21-2) unstable; urgency=medium
+
+  * Build-conflict with gdb on ppc64el and mipsel. Workaround gdb breakage on those
+    architectures (Closes: #804792).
+
+ -- David Bremner <bremner@debian.org>  Thu, 12 Nov 2015 08:54:23 -0400
+
 notmuch (0.21-1) unstable; urgency=medium
 
   * New upstream release. Highlights include
diff --git a/debian/control b/debian/control
index ea438315..7e6a548c 100644
--- a/debian/control
+++ b/debian/control
@@ -5,7 +5,7 @@ Maintainer: Carl Worth <cworth@debian.org>
 Uploaders:
  Jameson Graef Rollins <jrollins@finestructure.net>,
  David Bremner <bremner@debian.org>
-Build-Conflicts: ruby1.8, gdb-minimal
+Build-Conflicts: ruby1.8, gdb-minimal, gdb [s390x ia64 armel ppc64el mips mipsel mips64el]
 Build-Depends:
  debhelper (>= 9),
  pkg-config,
@@ -20,7 +20,7 @@ Build-Depends:
  ruby, ruby-dev (>>1:1.9.3~),
  emacs24-nox | emacs24 (>=24~) | emacs24-lucid (>=24~) |
  emacs23-nox | emacs23 (>=23~) | emacs23-lucid (>=23~),
- gdb [!s390x !ia64 !armel],
+ gdb [!s390x !ia64 !armel !ppc64el !mips !mipsel !mips64el],
  dtach (>= 0.8),
  bash-completion (>=1.9.0~)
 Standards-Version: 3.9.6