diff --git a/bump-tag b/bump-tag
new file mode 100755
index 0000000..ee89988
--- /dev/null
+++ b/bump-tag
@@ -0,0 +1,81 @@
+#!/bin/bash
+set -e
+
+echo "Fetching any updates from server:"
+git pull
+echo ""
+
+cur_branch=$(git branch --show-current)
+
+if [[ -z ${1} ]]; then
+	deftag="${cur_branch}"
+else
+	deftag="${1}"
+fi
+
+if ! [[ ${deftag} =~ ${cur_branch} ]] && ! [[ ${GIT_PUSH_EXTRA} =~ '--no-verify' ]]; then
+	echo "Your tag: ${deftag} does not match the name of the branch: ${cur_branch}."
+	echo "To push anyway, run: GIT_PUSH_EXTRA='--no-verify' ${0} ${*}"
+	exit 1
+fi
+
+tagpfx=${tag:="${deftag}"}
+
+if [[ -z ${ALLOW_NEW_TAG} ]]; then
+	echo "${0}: Looking for last-tag matching ${tagpfx}-2*"
+	last_tag=$(git tag -l "${tagpfx}-2*" | sort | tail -1)
+
+	if [[ -z ${last_tag} ]]; then
+		echo ""
+		echo -e "Tag matching \e[1m${tagpfx}-2* NOT FOUND\e[0m, aborting."
+		echo "To create new tag, run: ALLOW_NEW_TAG=true ${0} ${*}"
+		exit 1
+	fi
+
+	echo -e "Verifying last tag \e[94m${last_tag}\e[0m:"
+	(git tag -v "${last_tag}" 2>&1 | grep ^gpg:) || true
+	# again to not mask exit status of git with grep
+	git tag -v "${last_tag}" >/dev/null 2>&1
+	echo ""
+	echo "Differences between tag ${last_tag} and what you are about to sign:"
+	git log --pretty=format:'%h %an %G? %s' --graph "${last_tag}..HEAD"
+
+	echo "Press enter to see diff"
+	read -r
+
+	PAGER="cat" git diff --color "${last_tag}"..HEAD
+	iter=1
+	ok=
+
+	while test -z "${ok}"; do
+		this_tag=$(date "+${tagpfx}-%Y-%m-%d-v$(printf "%02d" ${iter})")
+		iter=$((iter + 1))
+		case $( (
+			echo "${this_tag}"
+			echo "${last_tag}"
+		) | sort | tail -1) in
+		"${last_tag}") ;;
+		"${this_tag}")
+			ok=yes
+			;;
+		esac
+	done
+	extra_message=" AND DIFF ABOVE"
+else
+  this_tag=$(date "+${tagpfx}-%Y-%m-%d-v1")
+fi
+
+echo ""
+echo -e "Using new tag \e[94m${this_tag}\e[0m"
+echo -e "\e[1mONLY SIGN IF YOU APPROVE OF VERIFICATION${extra_message}\e[0m"
+
+# GIT_TAG_EXTRA is for putting things like "-u 2117364A"
+# shellcheck disable=SC2086
+git tag ${GIT_TAG_EXTRA} -m bump. -s "${this_tag}"
+
+# GIT_PUSH_EXTRA is for putting things like "--no-verify"
+# shellcheck disable=SC2086
+git push ${GIT_PUSH_EXTRA}
+
+# shellcheck disable=SC2086
+git push --tags ${GIT_PUSH_EXTRA}