diff --git a/update.sh b/update.sh
new file mode 100755
index 0000000..d6b2785
--- /dev/null
+++ b/update.sh
@@ -0,0 +1,10 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p nix-update
+
+set -Eeuxo pipefail
+
+cd "$(dirname "$0")"
+
+nix flake update
+
+nix-update --flake redlib --version=branch=main