diff --git a/README.md b/README.md
index d2fd6be..0989470 100644
--- a/README.md
+++ b/README.md
@@ -14,11 +14,15 @@ See below for ACL.
 
 ## Progress
 
-Our first milestone is 2020/09/20, when the first ACL contest is planned.
-We aim to implement the same toolset as original ACL(C++) on the day.
+We are trying to keep up with the original ACL, to make APIs user-friendly, to fix known bugs, and so on.
 
-We are trying to implement with the same files by referring to the original ACL's hpp.
-After that we try to improve our development flow, tests, or utilities.
+- [Track the recent changes in atcoder/ac-library #91](https://github.com/rust-lang-ja/ac-library-rs/issues/91)
+- [Write rustdoc #75](https://github.com/rust-lang-ja/ac-library-rs/issues/75)
+- [Segtree: Monoid BitOrOper/BitAndOper/BitXorOper, FromIterator, get\_slice #115](https://github.com/rust-lang-ja/ac-library-rs/pull/115)
+- [u32 modulo fix #112](https://github.com/rust-lang-ja/ac-library-rs/pull/112)
+
+However, we can't afford to do all of these things by ourselves.
+If you are using ac-library-rs, are familiar with competitive programming, and can find time, please help us.
 
 ## How to contribute
 
@@ -27,4 +31,8 @@ After that we try to improve our development flow, tests, or utilities.
 
 ## More information
 
-We have a slack workspace [rust-jp.rs](https://rust-jp.rs/). Please join it.
+We have a Zulip organization [rust-jp.rs](https://rust-jp.rs/).
+All of the streams and topics are visible without logging in.
+If you like, please join it.
+
+We are discussing this project in [`#競プロ > ac-library-rs`](https://rust-lang-jp.zulipchat.com/#narrow/stream/334326-.E7.AB.B6.E3.83.97.E3.83.AD/topic/ac-library-rs).