diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1dc96e3..3fc2879 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,33 @@
+<a name="v0.5.1"></a>
+# [v0.5.1](https://github.com/rhysd/tui-textarea/releases/tag/v0.5.1) - 12 Jul 2024
+
+- Add `serde` optional feature. When it is enabled, some types support the serialization/deserialization with [serde](https://crates.io/crates/serde) crate. See [the document](https://github.com/rhysd/tui-textarea?tab=readme-ov-file#serializationdeserialization-support) for more details. ([#62](https://github.com/rhysd/tui-textarea/issues/62), thanks [@cestef](https://github.com/cestef))
+  ```rust
+  use tui_textarea::Input;
+
+  let json = r#"
+      {
+          "key": { "Char": "a" },
+          "ctrl": true,
+          "alt": false,
+          "shift": true
+      }
+  "#;
+
+  let input: Input = serde_json::from_str(json).unwrap();
+  println!("{input}");
+  // Input {
+  //     key: Key::Char('a'),
+  //     ctrl: true,
+  //     alt: false,
+  //     shift: true,
+  // }
+  ```
+
+
+[Changes][v0.5.1]
+
+
 <a name="v0.5.0"></a>
 # [v0.5.0](https://github.com/rhysd/tui-textarea/releases/tag/v0.5.0) - 07 Jul 2024
 
@@ -317,6 +347,7 @@ First release :tada:
 [Changes][v0.1.0]
 
 
+[v0.5.1]: https://github.com/rhysd/tui-textarea/compare/v0.5.0...v0.5.1
 [v0.5.0]: https://github.com/rhysd/tui-textarea/compare/v0.4.0...v0.5.0
 [v0.4.0]: https://github.com/rhysd/tui-textarea/compare/v0.3.1...v0.4.0
 [v0.3.1]: https://github.com/rhysd/tui-textarea/compare/v0.3.0...v0.3.1
diff --git a/README.md b/README.md
index cbcb831..579223d 100644
--- a/README.md
+++ b/README.md
@@ -660,6 +660,30 @@ Values of the following types can be serialized/deserialized:
 - `CursorMove`
 - `Scrolling`
 
+Here is an example for deserializing key input from JSON using [serde_json][].
+
+```rust
+use tui_textarea::Input;
+
+let json = r#"
+    {
+        "key": { "Char": "a" },
+        "ctrl": true,
+        "alt": false,
+        "shift": true
+    }
+"#;
+
+let input: Input = serde_json::from_str(json).unwrap();
+println!("{input}");
+// Input {
+//     key: Key::Char('a'),
+//     ctrl: true,
+//     alt: false,
+//     shift: true,
+// }
+```
+
 ## Minimum Supported Rust Version
 
 MSRV of this crate is depending on `tui` crate. Currently MSRV is 1.56.1. Note that `ratatui` crate requires more recent Rust version.
@@ -705,3 +729,4 @@ tui-textarea is distributed under [The MIT License](./LICENSE.txt).
 [pulls]: https://github.com/rhysd/tui-textarea/pulls
 [regex]: https://docs.rs/regex/latest/regex/
 [serde]: https://crates.io/crates/serde
+[serde_json]: https://crates.io/crates/serde_json