diff --git a/src/bot/mod.rs b/src/bot/mod.rs
index 4f370663..34020623 100644
--- a/src/bot/mod.rs
+++ b/src/bot/mod.rs
@@ -1,3 +1,5 @@
+//! A Telegram bot.
+
 use reqwest::Client;
 
 use crate::requests::RequestContext;
diff --git a/src/dispatcher/mod.rs b/src/dispatcher/mod.rs
index a4d5c310..b957411a 100644
--- a/src/dispatcher/mod.rs
+++ b/src/dispatcher/mod.rs
@@ -1,4 +1,4 @@
-//! POC implementation of update dispatching
+//! Update dispatching.
 
 pub mod filter;
 pub mod handler;
diff --git a/src/requests/mod.rs b/src/requests/mod.rs
index 2a4d922c..50f7ffaa 100644
--- a/src/requests/mod.rs
+++ b/src/requests/mod.rs
@@ -1,3 +1,5 @@
+//! Raw API functions.
+
 use reqwest::Client;
 use serde::de::DeserializeOwned;
 
@@ -59,6 +61,7 @@ mod stop_message_live_location;
 mod unban_chat_member;
 mod unpin_chat_message;
 
+/// A type that is returned from `Request::send_boxed`.
 pub type ResponseResult<T> = Result<T, RequestError>;
 
 /// A request that can be sent to Telegram.
@@ -71,8 +74,11 @@ pub trait Request {
     async fn send_boxed(self) -> ResponseResult<Self::Output>;
 }
 
+/// A context used to send all the requests.
 #[derive(Debug, Clone)]
 pub struct RequestContext<'a> {
+    /// An HTTPS client.
     pub client: &'a Client,
+    /// A token of your bot.
     pub token: &'a str,
 }
diff --git a/src/types/mod.rs b/src/types/mod.rs
index 4aafcb55..b3268627 100644
--- a/src/types/mod.rs
+++ b/src/types/mod.rs
@@ -1,3 +1,5 @@
+//! Raw API structures.
+
 pub use self::{
     animation::Animation,
     audio::Audio,