diff --git a/DEVELOPING.md b/DEVELOPING.md
index 6429f5a9..082a6e2f 100644
--- a/DEVELOPING.md
+++ b/DEVELOPING.md
@@ -118,7 +118,7 @@ listen('my_message_type', (message_type, optional_body) => {
 
 ## Building
 
-The server binary is built using rust and cargo, and requires a minimum of rust `1.66`.
+The server binary is built using rust and cargo, and requires a minimum of rust `1.70`.
 
 - Install `rust` through your package manager or [rustup](https://rustup.rs/)
 - Run `cargo build`