This package use multiple upstream tarballs. See https://raphaelhertzog.com/2010/09/07/how-to-use-multiple-upstream-tarballs-in-debian-source-packages/ Example of updating from 4.16.6 to 4.17.4 Step 1: Download both tarballs uscan --verbose This will create node-lodash_4.17.4+dfsg.orig.tar.xz and lodash-methods-4.17.4.tar.gz will need to be downloaded manually. See commented entry in watch file for downloading this file. Note: due to a uscan bug, excluding files from gitlab.com tarballs don't work. So node-lodash_4.17.4+dfsg.orig.tar.xz will need to be generated manually. Rename second tarball to node-lodash_4.17.4+dfsg.orig-modules.tar.gz Step 2: Extract previous version's dsc file dpkg-souce -x node-lodash_4.16.6+dfsg-2.dsc Step 3: Use uupdate to use first tarball cd node-lodash-4.16.6+dfsg uupdate -v 4.17.4+dfsg ../node-lodash_4.17.4+dfsg.orig.tar.xz Step 4: Extract second tarball cd ../node-lodash-4.17.4+dfsg tar -zxvf ../node-lodash_4.17.4+dfsg.orig-modules.tar.gz mv lodash-4.17.4-npm-* modules Step 5: Create dsc file dpkg-source -b . Step 6: Import dsc file to git cd ../node-lodash gbp import-dsc --pristine-tar ../node-lodash_4.17.4+dfsg-1.dsc Step 7: Modify and build Make changes in the git repo and generate dsc file dpkg-source -b . cd .. sbuild -sA -d unstable node-lodash_4.17.4+dfsg-1.dsc