diff --git a/Cargo.toml b/Cargo.toml
index 714b6c6a..7cfa021b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,7 +7,7 @@ authors = ["Stellar Development Foundation <info@stellar.org>"]
 license = "Apache-2.0"
 version = "20.0.0-rc1"
 edition = "2021"
-rust-version = "1.72"
+rust-version = "1.73"
 
 [[bin]]
 name = "stellar-xdr"