diff --git a/CHANGELOG.md b/CHANGELOG.md
index 18769a9..455c663 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## v0.2.1
+
+* Support remapping a mouse with `BTN_SIDE`
+  [#57](https://github.com/k0kubun/xremap/pull/57)
+
 ## v0.2.0
 
 * Support left/right-specific modifiers by `_L`/`_R` prefixes
diff --git a/Cargo.lock b/Cargo.lock
index 33d657a..22ba81d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -967,7 +967,7 @@ dependencies = [
 
 [[package]]
 name = "xremap"
-version = "0.2.0"
+version = "0.2.1"
 dependencies = [
  "env_logger",
  "evdev",
diff --git a/Cargo.toml b/Cargo.toml
index bc929bf..451a775 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "xremap"
-version = "0.2.0"
+version = "0.2.1"
 edition = "2021"
 description = "Dynamic key remapp for X and Wayland"
 license = "MIT"