diff --git a/Cargo.toml b/Cargo.toml
index 001096245..879961180 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,13 +4,13 @@ default-members = ["crates/rmcp", "crates/rmcp-macros"]
 resolver = "2"
 
 [workspace.dependencies]
-rmcp = { version = "3.1.4", path = "./crates/rmcp" }
-rmcp-macros = { version = "3.1.4", path = "./crates/rmcp-macros" }
+rmcp = { version = "3.1.5", path = "./crates/rmcp" }
+rmcp-macros = { version = "3.1.5", path = "./crates/rmcp-macros" }
 
 [workspace.package]
 edition = "2024"
 rust-version = "1.88"
-version = "3.1.4"
+version = "3.1.5"
 authors = ["4t145 <u4t145@163.com>"]
 license = "Apache-2.0"
 repository = "https://github.com/modelcontextprotocol/rust-sdk/"
diff --git a/crates/rmcp-macros/CHANGELOG.md b/crates/rmcp-macros/CHANGELOG.md
index 910257a28..9938f0210 100644
--- a/crates/rmcp-macros/CHANGELOG.md
+++ b/crates/rmcp-macros/CHANGELOG.md
@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [3.1.5](https://github.com/modelcontextprotocol/rust-sdk/compare/rmcp-macros-v3.1.4...rmcp-macros-v3.1.5) - 2026-08-27
+
+### Fixed
+
+- allow concurrent streamable http requests ([#1186](https://github.com/modelcontextprotocol/rust-sdk/pull/1186))
+
 ## [3.1.3](https://github.com/modelcontextprotocol/rust-sdk/compare/rmcp-macros-v3.1.2...rmcp-macros-v3.1.3) - 2026-08-17
 
 ### Fixed
diff --git a/crates/rmcp/CHANGELOG.md b/crates/rmcp/CHANGELOG.md
index b7b7d542a..5475d9969 100644
--- a/crates/rmcp/CHANGELOG.md
+++ b/crates/rmcp/CHANGELOG.md
@@ -7,6 +7,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [3.1.5](https://github.com/modelcontextprotocol/rust-sdk/compare/rmcp-v3.1.4...rmcp-v3.1.5) - 2026-08-27
+
+### Fixed
+
+- *(transport)* fall back after sessionless HTTP discover rejections ([#1211](https://github.com/modelcontextprotocol/rust-sdk/pull/1211))
+- allow concurrent streamable http requests ([#1186](https://github.com/modelcontextprotocol/rust-sdk/pull/1186))
+
 ## [3.1.4](https://github.com/modelcontextprotocol/rust-sdk/compare/rmcp-v3.1.3...rmcp-v3.1.4) - 2026-08-18
 
 ### Fixed