diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9efa2b4..f885d20 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.5.2](https://github.com/rust-mcp-stack/rust-mcp-schema/compare/v0.5.1...v0.5.2) (2025年05月28日)
+
+
+### Features
+
+* add protocol version enum, update draft version ([#71](https://github.com/rust-mcp-stack/rust-mcp-schema/issues/71)) ([1040b11](https://github.com/rust-mcp-stack/rust-mcp-schema/commit/1040b112e5a81e6b650cbe26dcfdd7c51841539a))
+
 ## [0.5.1](https://github.com/rust-mcp-stack/rust-mcp-schema/compare/v0.5.0...v0.5.1) (2025年05月23日)
 
 
diff --git a/Cargo.lock b/Cargo.lock
index 6f53d01..932e189 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -156,7 +156,7 @@ dependencies = [
 
 [[package]]
 name = "rust-mcp-schema"
-version = "0.5.1"
+version = "0.5.2"
 dependencies = [
 "json5",
 "serde",
diff --git a/Cargo.toml b/Cargo.toml
index b48f9cb..b24bfe4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "rust-mcp-schema"
-version = "0.5.1"
+version = "0.5.2"
 authors = ["Ali Hashemi"]
 categories = ["data-structures", "parser-implementations", "parsing"]
 description = "Type-safe implementation of the Model Context Protocol in Rust, designed to reduce errors and accelerate development with powerful utilities."
diff --git a/README.md b/README.md
index f2adc5f..0d7636d 100644
--- a/README.md
+++ b/README.md
@@ -85,21 +85,21 @@ Example: enable `2024_11_05` version of the shema:
 
 ```toml
 # Cargo.toml
-rust-mcp-schema = { version: 0.5.1 , features=["2024_11_05"] }
+rust-mcp-schema = { version: 0.5.2 , features=["2024_11_05"] }
 ```
 
 Example: enable `latest` version of the shema:
 
 ```toml
 #Cargo.toml
-rust-mcp-schema = { version: 0.5.1 , features=["latest"] }
+rust-mcp-schema = { version: 0.5.2 , features=["latest"] }
 ```
 
 Example: enable `draft`` version of the shema (2024_11_05) :
 
 ```toml
 #Cargo.toml
-rust-mcp-schema = { version: 0.5.1 , features=["draft"] }
+rust-mcp-schema = { version: 0.5.2 , features=["draft"] }
 ```
 
 
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