diff --git a/debian/changelog b/debian/changelog
index fbd27cb7..055f59d2 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -6,7 +6,7 @@ livecd-rootfs (2.664.5) focal; urgency=medium
 
   [ Cody Shepherd ]
   * Add dist-upgrade to bootable-buildd hook to ensure the built image
-    doesn't contain vulnerable kernels or other packages.
+    doesn't contain vulnerable kernels or other packages.  LP: #1891061.
   * Don't explicitly install grub-efi-amd64-signed, it's a dependency of
     shim-signed.