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diff --git a/bump-gn.sh b/bump-gn.sh
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+#!/bin/bash
+
+# This script actually only creates an appropriately-versioned GN tarball to assist
+# in the process of bumping the GN version. It does not actually bump the GN version
+# in the gentoo tree as we need to upload the tarball to a devspace.
+
+# Users should set the following to make xz work:
+# git config --global tar.tar.xz.command "xz -T0 -9 -c"
+
+# check if /tmp/gn exists and if so delete it
+if [ -d /tmp/gn ]; then
+  rm -rf /tmp/gn
+fi
+
+# Clone the gn repo
+git clone https://gn.googlesource.com/gn /tmp/gn
+
+pushd /tmp/gn
+
+commit=$(git describe --tags)
+pattern="([^-]*)-([^-]*)-([^-]*)-(.*)"
+[[ $commit =~ $pattern ]]
+count="${BASH_REMATCH[3]}"
+
+git archive --format=tar.xz --prefix=gn-0.${count}/ -o /tmp/gn-0.${count}.tar.xz HEAD
+
+popd
+
+echo "Tarball created at /tmp/gn-0.${count}.tar.xz"