diff --git a/Cargo.toml b/Cargo.toml
index 838ec2b61fbbef..2c9016612c75ce 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,6 +8,7 @@ members = [
 name = "ruff"
 version = "0.0.135"
 edition = "2021"
+rust-version = "1.65.0"
 
 [lib]
 name = "ruff"