diff --git a/Cargo.toml b/Cargo.toml
index f238d03..37bb967 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,12 +7,12 @@ members = [
 ]
 
 [workspace.package]
-version = "0.3.0"
+version = "0.3.1"
 edition = "2021"
 authors = ["Yuekai Jia <equation618@gmail.com>", "aarkegz <aarkegz@gmail.com>"]
 license = "GPL-3.0-or-later OR Apache-2.0 OR MulanPSL-2.0"
 homepage = "https://github.com/arceos-org/arceos"
 # documentation = "let member have their own documentation links"
-repository = "https://github.com/arceos-org/memory_addr"
+repository = "https://github.com/arceos-org/axmm_crates"
 # keywords = ["let member have their own keywords"]
 categories = ["os", "memory-management", "no-std"]
diff --git a/README.md b/README.md
index 853a533..d641019 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,6 @@
-# `memory_addr`
+# `axmm_crates`
 
-Structures, functions and traits for physical and virtual memory addresses as well as memory mappings.
-
-See documentations and readmes of the sub-crates for more information.
+Crates for memory management.
 
 - `memory_addr`([docs](https://docs.rs/memory_addr)|[crates.io](https://crates.io/crates/memory_addr)|[readme](memory_addr/README.md)): Wrappers and helper functions for physical and virtual memory addresses.
 - `memory_set`([docs](https://docs.rs/memory_set)|[crates.io](https://crates.io/crates/memory_set)|[readme](memory_set/README.md)): Data structures and operations for managing memory mappings.