diff --git a/rust-toolchain.toml b/rust-toolchain.toml
new file mode 100644
index 00000000..7109af18
--- /dev/null
+++ b/rust-toolchain.toml
@@ -0,0 +1,4 @@
+[toolchain]
+channel = "nightly-2021-10-24"
+components = ["rustfmt", "clippy"]
+profile = "minimal"
diff --git a/src/dispatching/update_listeners/polling.rs b/src/dispatching/update_listeners/polling.rs
index 27e850fe..e0c63b62 100644
--- a/src/dispatching/update_listeners/polling.rs
+++ b/src/dispatching/update_listeners/polling.rs
@@ -55,7 +55,8 @@ where
 /// [`default_reqwest_settings`]: teloxide::net::default_reqwest_settings
 /// [`repl`]: fn@crate::repl
 /// [`Dispatcher`]: crate::dispatching::Dispatcher
-/// [`hint_allowed_updates`]: crate::dispatching::update_listeners::UpdateListener::hint_allowed_updates
+/// [`hint_allowed_updates`]:
+/// crate::dispatching::update_listeners::UpdateListener::hint_allowed_updates
 ///
 /// ## How it works
 ///