diff --git a/Cargo.lock b/Cargo.lock
index c74e39f9..6caa23f7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4,7 +4,7 @@ version = 4
 
 [[package]]
 name = "agent-client-protocol"
-version = "2.1.0"
+version = "2.1.1"
 dependencies = [
  "agent-client-protocol-derive",
  "agent-client-protocol-schema",
@@ -31,7 +31,7 @@ dependencies = [
 
 [[package]]
 name = "agent-client-protocol-conductor"
-version = "2.1.0"
+version = "2.1.1"
 dependencies = [
  "agent-client-protocol",
  "agent-client-protocol-polyfill",
@@ -61,7 +61,7 @@ dependencies = [
 
 [[package]]
 name = "agent-client-protocol-cookbook"
-version = "2.1.0"
+version = "2.1.1"
 dependencies = [
  "agent-client-protocol",
  "agent-client-protocol-rmcp",
@@ -74,15 +74,15 @@ dependencies = [
 
 [[package]]
 name = "agent-client-protocol-derive"
-version = "2.1.0"
+version = "2.1.1"
 dependencies = [
  "quote",
- "syn 3.0.4",
+ "syn 3.0.5",
 ]
 
 [[package]]
 name = "agent-client-protocol-http"
-version = "2.1.0"
+version = "2.1.1"
 dependencies = [
  "agent-client-protocol",
  "agent-client-protocol-test",
@@ -105,7 +105,7 @@ dependencies = [
 
 [[package]]
 name = "agent-client-protocol-polyfill"
-version = "2.1.0"
+version = "2.1.1"
 dependencies = [
  "agent-client-protocol",
  "async-stream",
@@ -122,7 +122,7 @@ dependencies = [
 
 [[package]]
 name = "agent-client-protocol-rmcp"
-version = "3.1.0"
+version = "3.1.1"
 dependencies = [
  "agent-client-protocol",
  "futures",
@@ -173,7 +173,7 @@ dependencies = [
 
 [[package]]
 name = "agent-client-protocol-trace-viewer"
-version = "2.1.0"
+version = "2.1.1"
 dependencies = [
  "anyhow",
  "axum",
@@ -381,7 +381,7 @@ checksum = "82f6aeea286b8eb4dd3431a1be1b59d290ace00f5bfd8e2a159bc2a05e2c1667"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 3.0.4",
+ "syn 3.0.5",
 ]
 
 [[package]]
@@ -655,7 +655,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 3.0.4",
+ "syn 3.0.5",
 ]
 
 [[package]]
@@ -749,9 +749,9 @@ dependencies = [
 
 [[package]]
 name = "crossbeam-utils"
-version = "0.8.22"
+version = "0.8.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "61803da095bee82a81bb1a452ecc25d3b2f1416d1897eb86430c6159ef717c17"
+checksum = "a31eee39dddec8330830986fcd7625edb5a24ec90ea038215273bbc3adb08ac6"
 
 [[package]]
 name = "crypto-common"
@@ -904,7 +904,7 @@ checksum = "c6232dd377dcc64799954cbd3a9bb882e9cdc1308ccd87b1c098f1fb2eaf82a8"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 3.0.4",
+ "syn 3.0.5",
 ]
 
 [[package]]
@@ -1097,7 +1097,7 @@ checksum = "9fb9654ba8355388abeb8dcb4fc62f511300867002afc858860463bdd9fe0c44"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 3.0.4",
+ "syn 3.0.5",
 ]
 
 [[package]]
@@ -1468,9 +1468,9 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "2.14.1"
+version = "2.14.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "07aa2048142242915a31d35844fb311e0e53fcca590c3a0a40dcf1b841fa09eb"
+checksum = "cc4e190f5d26ca7051642629da2c52fc03bde85a03197c99408dcd291734c855"
 dependencies = [
  "equivalent",
  "hashbrown 0.17.1",
@@ -1480,9 +1480,9 @@ dependencies = [
 
 [[package]]
 name = "ipnet"
-version = "2.12.1"
+version = "2.12.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6a756c3fac73139e83f14c2d742155dd2b78d3ee56597b419a0579b7bdd6dd78"
+checksum = "791930b43c0d5973160d90a8f3894509f2b273430f5c5c73b668636d0287c5c0"
 
 [[package]]
 name = "is-docker"
@@ -1629,9 +1629,9 @@ dependencies = [
 
 [[package]]
 name = "js-sys"
-version = "0.3.104"
+version = "0.3.105"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0e0c1080212aad755ea003d18543e8768dd432c48819efd73a7bf1e39b7a5a3a"
+checksum = "ce57d20d1ea864ce2ac172ab472d409214f4fd359f0b2a2775abdf522e2af99e"
 dependencies = [
  "cfg-if",
  "futures-util",
@@ -1922,7 +1922,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2e842efad9119158434d193c6682e2ebee4b44d6ad801d7b349623b3f57cdf55"
 dependencies = [
  "futures",
- "indexmap 2.14.1",
+ "indexmap 2.14.2",
  "nix",
  "tokio",
  "tracing",
@@ -2079,7 +2079,7 @@ checksum = "92ecd8964f8453721699a1ed72037b0db49ce2f5a5138486ee89bed6f67cdf3a"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 3.0.4",
+ "syn 3.0.5",
 ]
 
 [[package]]
@@ -2235,9 +2235,9 @@ dependencies = [
 
 [[package]]
 name = "rustls"
-version = "0.23.43"
+version = "0.23.44"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0283386ce02abc0151e1761d08802dfe86c173b0b494af5cbc086574e453da06"
+checksum = "6725596c3f2c3a0aef021139e145d4eafe314a6623e4680ca83852b2c67ab2ba"
 dependencies = [
  "aws-lc-rs",
  "once_cell",
@@ -2373,7 +2373,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "serde_derive_internals",
- "syn 3.0.4",
+ "syn 3.0.5",
 ]
 
 [[package]]
@@ -2432,7 +2432,7 @@ checksum = "e7a5d71263a5a7d47b41f6b3f06ba276f10cc18b0931f1799f710578e2309348"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 3.0.4",
+ "syn 3.0.5",
 ]
 
 [[package]]
@@ -2443,7 +2443,7 @@ checksum = "f852137cce035d6a4df67ccce505ff6b3e9fd3a10e3e52b24dc71e650bb1a9bd"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 3.0.4",
+ "syn 3.0.5",
 ]
 
 [[package]]
@@ -2452,7 +2452,7 @@ version = "1.0.151"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c841b55ecdae098c80dcae9cf767f6f8a0c2cdb3416bbef72181df4d0fe73f14"
 dependencies = [
- "indexmap 2.14.1",
+ "indexmap 2.14.2",
  "itoa",
  "memchr",
  "serde",
@@ -2494,7 +2494,7 @@ dependencies = [
  "chrono",
  "hex",
  "indexmap 1.9.3",
- "indexmap 2.14.1",
+ "indexmap 2.14.2",
  "jiff",
  "schemars 0.9.0",
  "schemars 1.2.2",
@@ -2681,9 +2681,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "3.0.4"
+version = "3.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e6275cddf4610d1775e6d1fe9469b2e77d0f39fd98fb7450901b821e0c53649f"
+checksum = "12df2e0110f65b775f769bb17ef989067a1d931b2eb822bd4346631eeada89f9"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -2727,7 +2727,7 @@ checksum = "bc04cd3e1236dd4a98afca4569f2deb3f120e5422a4023be2cb683f8486292af"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 3.0.4",
+ "syn 3.0.5",
 ]
 
 [[package]]
@@ -2818,7 +2818,7 @@ checksum = "78773a2a397f451582ce068015985c33193cf6dea8b74d2a639fe457b2f07b0e"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 3.0.4",
+ "syn 3.0.5",
 ]
 
 [[package]]
@@ -3167,9 +3167,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen"
-version = "0.2.127"
+version = "0.2.128"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1b70935747edd64d89de3efa29d73789b806c15798f8e7dca4d8ac356b50ce70"
+checksum = "aecb87a33d3b0c5e3b7aa46336eaf486cffafbd281b195e4c8b80d50df2351bf"
 dependencies = [
  "cfg-if",
  "once_cell",
@@ -3180,9 +3180,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-futures"
-version = "0.4.77"
+version = "0.4.78"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6b7777d5cc23d0e91404e53ce2d5e8ec7acae3026b16233dba62cd3246457950"
+checksum = "6ef4c5d3d2cdf5c54f4231181768f5510842e350db025faf1f7163b1030ed928"
 dependencies = [
  "js-sys",
  "wasm-bindgen",
@@ -3190,9 +3190,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro"
-version = "0.2.127"
+version = "0.2.128"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "77775f8f3f7217702089053b94958f8f54061a3f663417df76e19cbdcca29bc1"
+checksum = "a690d511e3c1a8b3a55e33511e3c2c00c78415cd23650f32b808627f5696b9ed"
 dependencies = [
  "quote",
  "wasm-bindgen-macro-support",
@@ -3200,22 +3200,22 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro-support"
-version = "0.2.127"
+version = "0.2.128"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e11d33f857dc2fb11b8bc75aee111aa9cbeb12cd9f25efd3d4c2a3dd4e235284"
+checksum = "411e4887f0071ef2d2164a9d5fdf2d20efbef78fccd3a78b0c10a1dc5295e48a"
 dependencies = [
  "bumpalo",
  "proc-macro2",
  "quote",
- "syn 2.0.119",
+ "syn 3.0.5",
  "wasm-bindgen-shared",
 ]
 
 [[package]]
 name = "wasm-bindgen-shared"
-version = "0.2.127"
+version = "0.2.128"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7ef64dbcc55df09c7e5a46182d181c2cfa3e925f3da937ea764728b4bbb9dcbf"
+checksum = "81941cd78d0c92026c33e5e01312845a4cb1e9af3407f9134b100dd03144103e"
 dependencies = [
  "unicode-ident",
 ]
@@ -3235,9 +3235,9 @@ dependencies = [
 
 [[package]]
 name = "web-sys"
-version = "0.3.104"
+version = "0.3.105"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c435338968042f4f59a557f690a253676d47ce13ceb55d70100e7facf6620a30"
+checksum = "9fbddc4a036f00ec4f18c83445bd3115cb306a91da554919a099d9222fe4a7f8"
 dependencies = [
  "js-sys",
  "wasm-bindgen",
@@ -3584,7 +3584,7 @@ checksum = "34df6fc39dbd26ddc9c10e6a2984476e13acce22e64e4487636ef494369225da"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 3.0.4",
+ "syn 3.0.5",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index 58d30374..0f48c305 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -27,14 +27,14 @@ homepage = "https://github.com/agentclientprotocol/rust-sdk"
 
 [workspace.dependencies]
 # Internal crates
-agent-client-protocol = { path = "src/agent-client-protocol", version = "2.1.0" }
-agent-client-protocol-conductor = { path = "src/agent-client-protocol-conductor", version = "2.1.0" }
-agent-client-protocol-derive = { path = "src/agent-client-protocol-derive", version = "2.1.0" }
-agent-client-protocol-http = { path = "src/agent-client-protocol-http", version = "2.1.0" }
-agent-client-protocol-polyfill = { path = "src/agent-client-protocol-polyfill", version = "2.1.0" }
-agent-client-protocol-rmcp = { path = "src/agent-client-protocol-rmcp", version = "3.1.0" }
+agent-client-protocol = { path = "src/agent-client-protocol", version = "2.1.1" }
+agent-client-protocol-conductor = { path = "src/agent-client-protocol-conductor", version = "2.1.1" }
+agent-client-protocol-derive = { path = "src/agent-client-protocol-derive", version = "2.1.1" }
+agent-client-protocol-http = { path = "src/agent-client-protocol-http", version = "2.1.1" }
+agent-client-protocol-polyfill = { path = "src/agent-client-protocol-polyfill", version = "2.1.1" }
+agent-client-protocol-rmcp = { path = "src/agent-client-protocol-rmcp", version = "3.1.1" }
 agent-client-protocol-test = { path = "src/agent-client-protocol-test" }
-agent-client-protocol-trace-viewer = { path = "src/agent-client-protocol-trace-viewer", version = "2.1.0" }
+agent-client-protocol-trace-viewer = { path = "src/agent-client-protocol-trace-viewer", version = "2.1.1" }
 yopo = { package = "agent-client-protocol-yopo", path = "src/yopo" }
 
 # Protocol
diff --git a/src/agent-client-protocol-conductor/Cargo.toml b/src/agent-client-protocol-conductor/Cargo.toml
index ca3310ad..8d19286e 100644
--- a/src/agent-client-protocol-conductor/Cargo.toml
+++ b/src/agent-client-protocol-conductor/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "agent-client-protocol-conductor"
-version = "2.1.0"
+version = "2.1.1"
 edition.workspace = true
 rust-version.workspace = true
 authors.workspace = true
diff --git a/src/agent-client-protocol-cookbook/Cargo.toml b/src/agent-client-protocol-cookbook/Cargo.toml
index ac2fc554..22f33c79 100644
--- a/src/agent-client-protocol-cookbook/Cargo.toml
+++ b/src/agent-client-protocol-cookbook/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "agent-client-protocol-cookbook"
-version = "2.1.0"
+version = "2.1.1"
 edition.workspace = true
 rust-version.workspace = true
 authors.workspace = true
diff --git a/src/agent-client-protocol-derive/Cargo.toml b/src/agent-client-protocol-derive/Cargo.toml
index 9e467b2b..e35cc199 100644
--- a/src/agent-client-protocol-derive/Cargo.toml
+++ b/src/agent-client-protocol-derive/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "agent-client-protocol-derive"
-version = "2.1.0"
+version = "2.1.1"
 edition.workspace = true
 rust-version.workspace = true
 authors.workspace = true
diff --git a/src/agent-client-protocol-http/Cargo.toml b/src/agent-client-protocol-http/Cargo.toml
index 0950c02b..45419def 100644
--- a/src/agent-client-protocol-http/Cargo.toml
+++ b/src/agent-client-protocol-http/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "agent-client-protocol-http"
-version = "2.1.0"
+version = "2.1.1"
 edition.workspace = true
 rust-version.workspace = true
 authors.workspace = true
diff --git a/src/agent-client-protocol-polyfill/Cargo.toml b/src/agent-client-protocol-polyfill/Cargo.toml
index ebbccd6a..33554619 100644
--- a/src/agent-client-protocol-polyfill/Cargo.toml
+++ b/src/agent-client-protocol-polyfill/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "agent-client-protocol-polyfill"
-version = "2.1.0"
+version = "2.1.1"
 edition.workspace = true
 rust-version.workspace = true
 authors.workspace = true
diff --git a/src/agent-client-protocol-rmcp/CHANGELOG.md b/src/agent-client-protocol-rmcp/CHANGELOG.md
index e58189dc..cddbbc67 100644
--- a/src/agent-client-protocol-rmcp/CHANGELOG.md
+++ b/src/agent-client-protocol-rmcp/CHANGELOG.md
@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [3.1.1](https://github.com/agentclientprotocol/rust-sdk/compare/agent-client-protocol-rmcp-v3.1.0...agent-client-protocol-rmcp-v3.1.1) - 2026-09-07
+
+### Other
+
+- updated the following local packages: agent-client-protocol
+
 ## [3.1.0](https://github.com/agentclientprotocol/rust-sdk/compare/agent-client-protocol-rmcp-v3.0.0...agent-client-protocol-rmcp-v3.1.0) - 2026-09-04
 
 ### Added
diff --git a/src/agent-client-protocol-rmcp/Cargo.toml b/src/agent-client-protocol-rmcp/Cargo.toml
index e2ff1a95..e02be28d 100644
--- a/src/agent-client-protocol-rmcp/Cargo.toml
+++ b/src/agent-client-protocol-rmcp/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "agent-client-protocol-rmcp"
-version = "3.1.0"
+version = "3.1.1"
 edition.workspace = true
 rust-version.workspace = true
 authors.workspace = true
diff --git a/src/agent-client-protocol-trace-viewer/Cargo.toml b/src/agent-client-protocol-trace-viewer/Cargo.toml
index a5a914cf..f4d49d55 100644
--- a/src/agent-client-protocol-trace-viewer/Cargo.toml
+++ b/src/agent-client-protocol-trace-viewer/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "agent-client-protocol-trace-viewer"
-version = "2.1.0"
+version = "2.1.1"
 edition.workspace = true
 rust-version.workspace = true
 authors.workspace = true
diff --git a/src/agent-client-protocol/CHANGELOG.md b/src/agent-client-protocol/CHANGELOG.md
index e573839f..2296cddb 100644
--- a/src/agent-client-protocol/CHANGELOG.md
+++ b/src/agent-client-protocol/CHANGELOG.md
@@ -2,6 +2,12 @@
 
 ## [Unreleased]
 
+## [2.1.1](https://github.com/agentclientprotocol/rust-sdk/compare/v2.1.0...v2.1.1) - 2026-09-07
+
+### Fixed
+
+- *(acp)* support JavaScript-hosted WebAssembly ([#308](https://github.com/agentclientprotocol/rust-sdk/pull/308))
+
 ### Fixed
 
 - Support JavaScript-hosted `wasm32-unknown-unknown` builds through the opt-in
diff --git a/src/agent-client-protocol/Cargo.toml b/src/agent-client-protocol/Cargo.toml
index b5fe7708..70c070a2 100644
--- a/src/agent-client-protocol/Cargo.toml
+++ b/src/agent-client-protocol/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "agent-client-protocol"
-version = "2.1.0"
+version = "2.1.1"
 edition.workspace = true
 rust-version.workspace = true
 authors.workspace = true