diff --git a/Cargo.toml b/Cargo.toml
index 9025621..35230e4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,7 +3,12 @@ name = "bitmap-allocator"
 version = "0.1.0"
 authors = ["WangRunji <wangrunji0408@163.com>"]
 edition = "2021"
+license = "MIT"
 readme = "README.md"
+description = "Bit allocator based on segment tree algorithm."
+repository = "https://github.com/rcore-os/bitmap-allocator"
+keywords = ["bitmap", "allocator", "memory"]
+categories = ["memory-management", "no-std"]
 
 [dependencies]
 bit_field = "0.10"
diff --git a/README.md b/README.md
index 936309e..4c220bc 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,8 @@
 # BitmapAllocator
 
-[![CI](https://github.com/rcore-os/bitmap-allocator/workflows/CI/badge.svg?branch=master)](https://github.com/rcore-os/bitmap-allocator/actions)
+[![Crates.io](https://img.shields.io/crates/v/bitmap-allocator)](https://crates.io/crates/bitmap-allocator)
+[![Docs.rs](https://docs.rs/bitmap-allocator/badge.svg)](https://docs.rs/bitmap-allocator)
+[![CI](https://github.com/rcore-os/bitmap-allocator/actions/workflows/main.yml/badge.svg?branch=main)](https://github.com/rcore-os/bitmap-allocator/actions/workflows/main.yml)
 [![Coverage Status](https://coveralls.io/repos/github/rcore-os/bitmap-allocator/badge.svg?branch=master)](https://coveralls.io/github/rcore-os/bitmap-allocator?branch=master)
 
 Bit allocator based on segment tree algorithm.
diff --git a/src/lib.rs b/src/lib.rs
index a3c5278..bf926f9 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,6 +1,5 @@
-//! Bit allocator based on segment tree algorithm.
-
 #![no_std]
+#![doc = include_str!("../README.md")]
 
 use bit_field::BitField;
 use core::ops::Range;