Index: maturin/Cargo.toml
===================================================================
--- maturin.orig/Cargo.toml
+++ maturin/Cargo.toml
@@ -71,7 +71,7 @@ tracing-subscriber = { version = "0.3.15
 # rustls
 ureq = { version = "2.6.1", features = ["gzip", "json", "socks-proxy"], default-features = false, optional = true }
 native-tls = { version = "0.2.8", optional = true }
-rustls = { version = "0.20.8", optional = true }
+rustls = { version = "0.21", optional = true }
 rustls-pemfile = { version = "1.0.1", optional = true }
 
 [dev-dependencies]
