diff --git a/README.md b/README.md
index 59efb18..45658b9 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@
 [![Dependencies Status](https://versions.deps.co/rm-hull/infix/status.svg)](https://versions.deps.co/rm-hull/infix)
 [![Downloads](https://versions.deps.co/rm-hull/infix/downloads.svg)](https://versions.deps.co/rm-hull/infix)
 [![Clojars Project](https://img.shields.io/clojars/v/rm-hull/infix.svg)](https://clojars.org/rm-hull/infix)
-[![Maintenance](https://img.shields.io/maintenance/yes/2021.svg?maxAge=2592000)]()
+[![Maintenance](https://img.shields.io/maintenance/yes/2023.svg?maxAge=2592000)]()
 
 A small Clojure library for representing LISP expressions in infix
 rather than prefix notation... sometimes it's easier to rely on operator precedence,