diff --git a/debian/changelog b/debian/changelog
index 368a31b..7b45668 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+iortcw (1.50a+dfsg1-3) UNRELEASED; urgency=medium
+
+  * d/gbp.conf: switch branch to debian/stretch for updates during freeze
+
+ -- Simon McVittie <smcv@debian.org>  Tue, 14 Mar 2017 09:09:05 +0000
+
 iortcw (1.50a+dfsg1-2) unstable; urgency=medium
 
   * Drop unused libspeexdsp-dev build-dependency
diff --git a/debian/gbp.conf b/debian/gbp.conf
index b3080b7..a11bc99 100644
--- a/debian/gbp.conf
+++ b/debian/gbp.conf
@@ -1,5 +1,5 @@
 [DEFAULT]
-debian-branch = debian/master
+debian-branch = debian/stretch
 upstream-branch = upstream/latest
 pristine-tar = True
 patch-numbers = False