diff --git a/backend/Cargo.toml b/backend/Cargo.toml
index 01b6869..da8e8d8 100644
--- a/backend/Cargo.toml
+++ b/backend/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "sopt"
 workspace = "../"
-version = "0.2.0"
+version = "0.2.1"
 authors = [
     "Brethland Yang <brethland@gmail.com>",
     "CattChen",
diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 92fb790..54553b6 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -1,6 +1,6 @@
 # CHANGELOG
 
-## Unreleased
+## 0.2.1
 new: auto configuration script `configure.py`.
 
 refine: No more need for initial rank configuration.
diff --git a/proxy/Cargo.toml b/proxy/Cargo.toml
index 704ecf6..a10c3a3 100644
--- a/proxy/Cargo.toml
+++ b/proxy/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "sopt_proxy"
 workspace = "../"
-version = "0.2.0"
+version = "0.2.1"
 authors = [
     "Brethland Yang <brethland@gmail.com>",
     "Five Qin <qinwu.qw@alibaba-inc.com>",