diff --git a/debian/changelog b/debian/changelog
index b738b3f7..2d0e04f0 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -2,6 +2,8 @@ livecd-rootfs (2.481) UNRELEASED; urgency=medium
 
   * The target for x86 ubuntu-core images is VMs, so create them with
     a buffer of free space in order to work if booted in place.
+  * ubuntu-image now produces a manifest file listing the snap revisions
+    used; publish this so that it's picked up by launchpad-buildd.
 
  -- Steve Langasek <steve.langasek@ubuntu.com>  Wed, 08 Nov 2017 12:01:25 -0800
 
diff --git a/live-build/auto/build b/live-build/auto/build
index 78936050..5a6d6c5b 100755
--- a/live-build/auto/build
+++ b/live-build/auto/build
@@ -33,6 +33,7 @@ if [ "${IMAGEFORMAT:-}" = "ubuntu-image" ]; then
 	ubuntu-image -c edge $extra_args \
 		-o livecd."$PROJECT".img livecd."$PROJECT".model-assertion
 	xz -0 -T4 livecd."$PROJECT".img
+	mv seed.manifest livecd."$PROJECT".manifest
 	exit 0
 fi