diff --git a/Cargo.toml b/Cargo.toml
index b645015eb..964089fa5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,7 +4,7 @@ version = "1.99.0"
 authors = ["Delta Chat Developers (ML) <delta@codespeak.net>"]
 edition = "2021"
 license = "MPL-2.0"
-rust-version = "1.56"
+rust-version = "1.57"
 
 [profile.dev]
 debug = 0