diff --git a/README.md b/README.md
index 75bb12ab35..84ccd2aa14 100644
--- a/README.md
+++ b/README.md
@@ -308,7 +308,7 @@ is disabled by default), by passing ``--features ffi`` to ``cargo``.
 Building
 --------
 
-quiche requires Rust 1.67 or later to build. The latest stable Rust release can
+quiche requires Rust 1.70 or later to build. The latest stable Rust release can
 be installed using [rustup](https://rustup.rs/).
 
 Once the Rust build environment is setup, the quiche source code can be fetched