diff --git a/README.md b/README.md
index 4c50d6130..a8fd03a52 100644
--- a/README.md
+++ b/README.md
@@ -33,7 +33,7 @@ Gitter [![Gitter https://gitter.im/paritytech/parity-bitcoin](https://badges.git
 
 Installing `pbtc` from source requires `rustc` and `cargo`.
 
-Minimal supported version is `rustc 1.23.0 (766bd11c8 2018-01-01)`
+Minimal supported version is `rustc 1.23.0 (766bd11c8 2018-01-01)`,Maximum supported version is `rustc 1.47.0 (18bf6b4f0 2020-10-07)`.
 
 #### Install rustc and cargo