diff --git a/README.md b/README.md
index 15ea346..156dabe 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 [![docs](https://img.shields.io/docsrs/inari)](https://docs.rs/inari)
 [![build](https://img.shields.io/github/actions/workflow/status/unageek/inari/build.yml?branch=main)](https://github.com/unageek/inari/actions?query=branch%3Amaster+workflow%3Abuild)
 [![coverage](https://img.shields.io/coveralls/github/unageek/inari/main)](https://coveralls.io/github/unageek/inari?branch=main)
-[![rustc 1.61+](https://img.shields.io/badge/rustc-1.61%2B-lightgrey)](https://blog.rust-lang.org/2022/05/19/Rust-1.61.0.html)
+[![rustc 1.65+](https://img.shields.io/badge/rustc-1.61%2B-lightgrey)](https://blog.rust-lang.org/2022/11/03/Rust-1.65.0.html)
 
 **inari** is a Rust implementation of [interval arithmetic](https://en.wikipedia.org/wiki/Interval_arithmetic).