diff --git a/debian/changelog b/debian/changelog
index 2910bb99..d21bad2a 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,10 @@
+livecd-rootfs (2.650) focal; urgency=medium
+
+  * Support generating a .disk/info file via ubuntu-image from the passed-in
+    datestamp parameter (using the $NOW environment variable).
+
+ -- Łukasz 'sil2100' Zemczak <lukasz.zemczak@ubuntu.com>  Fri, 06 Mar 2020 11:12:12 +0100
+
 livecd-rootfs (2.649) focal; urgency=medium
 
   * Fix autoinstall-extracting runcmd in the case no user-data is passed.
diff --git a/live-build/auto/config b/live-build/auto/config
index 957da9b2..050d2075 100755
--- a/live-build/auto/config
+++ b/live-build/auto/config
@@ -346,6 +346,13 @@ case $IMAGEFORMAT in
 				;;
 		esac
 
+		# If we have a datestamp coming from cdimage, use that to populate
+		# .disk/info on the target image
+		if [ -n "$NOW" ]; then
+			echo "$NOW" > config/disk-info
+			UBUNTU_IMAGE_ARGS="$UBUNTU_IMAGE_ARGS --disk-info config/disk-info"
+		fi
+
 		if [ $PROJECT = "ubuntu-core" ]; then
 			# snap-based core images
 
@@ -353,7 +360,7 @@ case $IMAGEFORMAT in
 			case $MODEL in
 				pc-amd64|pc-i386)
 					[ -z "${SUBARCH:-}" ] \
-					&& UBUNTU_IMAGE_ARGS="--image-size 3700M"
+					&& UBUNTU_IMAGE_ARGS="$UBUNTU_IMAGE_ARGS --image-size 3700M"
 					;;
 				*) ;;
 			esac