diff --git a/Cargo.toml b/Cargo.toml
index 261b77e83..e34a60719 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,13 +4,13 @@ default-members = ["crates/rmcp", "crates/rmcp-macros"]
 resolver = "2"
 
 [workspace.dependencies]
-rmcp = { version = "3.3.0", path = "./crates/rmcp" }
-rmcp-macros = { version = "3.3.0", path = "./crates/rmcp-macros" }
+rmcp = { version = "3.3.1", path = "./crates/rmcp" }
+rmcp-macros = { version = "3.3.1", path = "./crates/rmcp-macros" }
 
 [workspace.package]
 edition = "2024"
 rust-version = "1.88"
-version = "3.3.0"
+version = "3.3.1"
 authors = ["4t145 <u4t145@163.com>"]
 license = "Apache-2.0"
 repository = "https://github.com/modelcontextprotocol/rust-sdk/"
diff --git a/crates/rmcp/CHANGELOG.md b/crates/rmcp/CHANGELOG.md
index 5465cf210..4ead4633e 100644
--- a/crates/rmcp/CHANGELOG.md
+++ b/crates/rmcp/CHANGELOG.md
@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [3.3.1](https://github.com/modelcontextprotocol/rust-sdk/compare/rmcp-v3.3.0...rmcp-v3.3.1) - 2026-09-11
+
+### Fixed
+
+- *(http)* enforce Origin validation semantics ([#1192](https://github.com/modelcontextprotocol/rust-sdk/pull/1192))
+
 ## [3.3.0](https://github.com/modelcontextprotocol/rust-sdk/compare/rmcp-v3.2.0...rmcp-v3.3.0) - 2026-09-10
 
 ### Added