diff --git a/.gitignore b/.gitignore
index 8aeb2d5..087f336 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 /cookies
+/*.gz
diff --git a/prepare-release.sh b/prepare-release.sh
new file mode 100755
index 0000000..83fc463
--- /dev/null
+++ b/prepare-release.sh
@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+cd "$(dirname "$0")"
+
+[ $# -eq 1 ] && grep -qE '^\d+\.\d+\.\d+$' <<<"$1" || {
+  echo "usage: $0 <semantic-version>" >&2
+  exit 2
+}
+
+set -x
+
+tag="v$1"
+
+export GO111MODULE=on
+export GOOS=darwin
+export GOARCH=amd64
+go build
+archive="cookies_${tag}_${GOOS}_${GOARCH}.gz"
+gzip --stdout cookies >"${archive}"
+hub release create -d -a "${archive}" -m "${tag}" "${tag}"