diff --git a/README.md b/README.md
index 5a3cce4c6..a2938cd51 100644
--- a/README.md
+++ b/README.md
@@ -36,9 +36,9 @@ If you're using a Cargo workspace, you should add the `[patch.crates.io]` sectio
 
 ### Note on supported Rust versions
 
-`libsignal-service-rs` is the at the core of [Whisperfish][whisperfish], a SailfishOS application. The SailfishOS Rust compiler is relatively old, and therefore the MSRV for `libsignal-service-actix` maps on the compiler for that operating system, including some lag. At moment of writing, this is **Rust 1.61**.
+`libsignal-service-rs` is the at the core of [Whisperfish][whisperfish], a SailfishOS application. The SailfishOS Rust compiler updates seldomly, and therefore the MSRV maps on the compiler for that operating system. At moment of writing, this is **Rust 1.72**.
 
-For other platforms, we don't mandate MSRV.
+For other platforms, we don't mandate MSRV. In practice, however, it is **Rust 1.70**.
 
 ## Contributing
 
diff --git a/libsignal-service-actix/Cargo.toml b/libsignal-service-actix/Cargo.toml
index ca6fd46ac..803c27ee3 100644
--- a/libsignal-service-actix/Cargo.toml
+++ b/libsignal-service-actix/Cargo.toml
@@ -11,15 +11,15 @@ rust-version = "1.70.0"
 # the Send requirement in libsignal-service needs to be lifted by enabling `unsend-futures`.
 libsignal-service = { path = "../libsignal-service", features = ["unsend-futures"] }
 
-awc = { version = "3.0.0-beta.19", features = ["rustls"] }
+awc = { version = "3.2.0", features = ["rustls-0_21"] }
 actix = "0.13"
+actix-http = "3.2.0"
 actix-rt = "2.4"
-# mpart-async 0.6 requires Rust 2021, violating MSRV = 1.52
-mpart-async = "0.5"
+mpart-async = "0.6"
 serde_json = "1.0"
 futures = "0.3"
 bytes = "1"
-rustls = "0.20"
+rustls = "0.21"
 rustls-pemfile = "0.3"
 url = "2.1"
 serde = "1.0"
diff --git a/libsignal-service-actix/src/push_service.rs b/libsignal-service-actix/src/push_service.rs
index d1a8a9172..2457831d4 100644
--- a/libsignal-service-actix/src/push_service.rs
+++ b/libsignal-service-actix/src/push_service.rs
@@ -669,7 +669,7 @@ fn get_client(cfg: &ServiceConfiguration, user_agent: String) -> Client {
     ssl_config.alpn_protocols = vec![b"http/1.1".to_vec()];
 
     let connector = Connector::new()
-        .rustls(Arc::new(ssl_config))
+        .rustls_021(Arc::new(ssl_config))
         .timeout(Duration::from_secs(10)); // https://github.com/actix/actix-web/issues/1047
     let client = awc::ClientBuilder::new()
         .connector(connector)
diff --git a/libsignal-service/Cargo.toml b/libsignal-service/Cargo.toml
index 390092a9f..77451cca1 100644
--- a/libsignal-service/Cargo.toml
+++ b/libsignal-service/Cargo.toml
@@ -41,7 +41,7 @@ prost-build = "0.10"
 anyhow = "1.0"
 tokio = { version = "1.0", features = ["macros", "rt"] }
 
-rustls = "0.20"
+rustls = "0.21"
 
 [features]
 unsend-futures = []