diff --git a/Cargo.lock b/Cargo.lock
index 346e6357..5f65f99d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4,7 +4,7 @@ version = 4
 
 [[package]]
 name = "agent-client-protocol"
-version = "2.0.0"
+version = "2.1.0"
 dependencies = [
  "agent-client-protocol-derive",
  "agent-client-protocol-schema",
@@ -31,7 +31,7 @@ dependencies = [
 
 [[package]]
 name = "agent-client-protocol-conductor"
-version = "2.0.0"
+version = "2.1.0"
 dependencies = [
  "agent-client-protocol",
  "agent-client-protocol-polyfill",
@@ -61,7 +61,7 @@ dependencies = [
 
 [[package]]
 name = "agent-client-protocol-cookbook"
-version = "2.0.0"
+version = "2.1.0"
 dependencies = [
  "agent-client-protocol",
  "agent-client-protocol-rmcp",
@@ -73,7 +73,7 @@ dependencies = [
 
 [[package]]
 name = "agent-client-protocol-derive"
-version = "2.0.0"
+version = "2.1.0"
 dependencies = [
  "quote",
  "syn 3.0.3",
@@ -81,7 +81,7 @@ dependencies = [
 
 [[package]]
 name = "agent-client-protocol-http"
-version = "2.0.0"
+version = "2.1.0"
 dependencies = [
  "agent-client-protocol",
  "agent-client-protocol-test",
@@ -104,7 +104,7 @@ dependencies = [
 
 [[package]]
 name = "agent-client-protocol-polyfill"
-version = "2.0.0"
+version = "2.1.0"
 dependencies = [
  "agent-client-protocol",
  "async-stream",
@@ -121,7 +121,7 @@ dependencies = [
 
 [[package]]
 name = "agent-client-protocol-rmcp"
-version = "3.0.0"
+version = "3.0.1"
 dependencies = [
  "agent-client-protocol",
  "futures",
@@ -173,7 +173,7 @@ dependencies = [
 
 [[package]]
 name = "agent-client-protocol-trace-viewer"
-version = "2.0.0"
+version = "2.1.0"
 dependencies = [
  "anyhow",
  "axum",
@@ -196,18 +196,18 @@ dependencies = [
 
 [[package]]
 name = "aho-corasick"
-version = "1.1.4"
+version = "1.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ddd31a130427c27518df266943a5308ed92d4b226cc639f5a8f1002816174301"
+checksum = "c982642fa9e8606056828ee9a8505737230110bb1099153c79efe865c59d12ba"
 dependencies = [
  "memchr",
 ]
 
 [[package]]
 name = "android_system_properties"
-version = "0.1.5"
+version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "819e7219dbd41043ac279b19830f2efc897156490d7fd6ea916720117ee66311"
+checksum = "ae221649c9976a6f6c56ae1facf410f3ddb33cc661c4b7b61020a912d4237fbc"
 dependencies = [
  "libc",
 ]
@@ -620,9 +620,9 @@ dependencies = [
 
 [[package]]
 name = "clap"
-version = "4.6.4"
+version = "4.6.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d91e0c145792ef73a6ad36d27c75ac09f1832222a3c209689d90f534685ee5b7"
+checksum = "301b56658598e48f3648647ac6fc887be7e7108eddfa4e9b63fcf3ec58c0cadf"
 dependencies = [
  "clap_builder",
  "clap_derive",
@@ -630,9 +630,9 @@ dependencies = [
 
 [[package]]
 name = "clap_builder"
-version = "4.6.2"
+version = "4.6.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f09628afdcc538b57f3c6341e9c8e9970f18e4a481690a64974d7023bd33548b"
+checksum = "94a65403d1a1bd28f7dc68eb8506e8874808ee5eecb59298de588e2e1407a078"
 dependencies = [
  "anstream",
  "anstyle",
@@ -802,9 +802,9 @@ dependencies = [
 
 [[package]]
 name = "data-encoding"
-version = "2.11.0"
+version = "2.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a4ae5f15dda3c708c0ade84bfee31ccab44a3da4f88015ed22f63732abe300c8"
+checksum = "4583a4551df46e2792f82ceeac45e850d2e2d5debba0b91f102385cda5b11f06"
 
 [[package]]
 name = "deranged"
@@ -1460,9 +1460,9 @@ dependencies = [
 
 [[package]]
 name = "ipnet"
-version = "2.12.0"
+version = "2.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d98f6fed1fde3f8c21bc40a1abb88dd75e67924f9cffc3ef95607bad8017f8e2"
+checksum = "6a756c3fac73139e83f14c2d742155dd2b78d3ee56597b419a0579b7bdd6dd78"
 
 [[package]]
 name = "is-docker"
@@ -1705,9 +1705,9 @@ checksum = "384b8ab6d37215f3c5301a95a4accb5d64aa607f1fcb26a11b5303878451b4fe"
 
 [[package]]
 name = "open"
-version = "5.4.0"
+version = "5.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a0b3d059e795d52b8a72fef45658620edd4d9c359b338564aa14391ffa511ed5"
+checksum = "f9cfef937e9c486488c7e3d949ae31c0f1d06bdacd75b99c086cb35356e30408"
 dependencies = [
  "is-wsl",
  "libc",
@@ -2008,9 +2008,9 @@ dependencies = [
 
 [[package]]
 name = "regex-automata"
-version = "0.4.16"
+version = "0.4.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8fcfdb36bda0c880c5931cdc7a2bcdc8ba4556847b9d912bca70bc94708711ad"
+checksum = "ad8553b9b26413251cbf30e620595c7a41b3887f03da04579c0e6b0d6a06b4b2"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -2652,9 +2652,9 @@ dependencies = [
 
 [[package]]
 name = "time"
-version = "0.3.54"
+version = "0.3.55"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3e1d5e639ff6bab73cb6885cc7e7b1de96c3f32c68ec55f3952614bec1092244"
+checksum = "cdb87b95ec50ddfa440816d227a17b2ccbdda963a316a727fda0fc4334f7d134"
 dependencies = [
  "deranged",
  "num-conv",
diff --git a/Cargo.toml b/Cargo.toml
index 867564c1..343b07b7 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 = "2.0.0" }
-agent-client-protocol-conductor = { path = "src/agent-client-protocol-conductor", version = "2.0.0" }
-agent-client-protocol-derive = { path = "src/agent-client-protocol-derive", version = "2.0.0" }
-agent-client-protocol-http = { path = "src/agent-client-protocol-http", version = "2.0.0" }
-agent-client-protocol-polyfill = { path = "src/agent-client-protocol-polyfill", version = "2.0.0" }
-agent-client-protocol-rmcp = { path = "src/agent-client-protocol-rmcp", version = "3.0.0" }
+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 = "3.0.1" }
 agent-client-protocol-test = { path = "src/agent-client-protocol-test" }
-agent-client-protocol-trace-viewer = { path = "src/agent-client-protocol-trace-viewer", version = "2.0.0" }
+agent-client-protocol-trace-viewer = { path = "src/agent-client-protocol-trace-viewer", version = "2.1.0" }
 yopo = { package = "agent-client-protocol-yopo", path = "src/yopo" }
 
 # Protocol
diff --git a/src/agent-client-protocol-conductor/CHANGELOG.md b/src/agent-client-protocol-conductor/CHANGELOG.md
index 02c7f273..7793b517 100644
--- a/src/agent-client-protocol-conductor/CHANGELOG.md
+++ b/src/agent-client-protocol-conductor/CHANGELOG.md
@@ -7,6 +7,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [2.1.0](https://github.com/agentclientprotocol/rust-sdk/compare/agent-client-protocol-conductor-v2.0.0...agent-client-protocol-conductor-v2.1.0) - 2026-08-05
+
+### Added
+
+- *(acp)* Add v2 proxy MCP attachment ([#314](https://github.com/agentclientprotocol/rust-sdk/pull/314))
+- *(polyfill)* Support v2 MCP-over-ACP bridge ([#305](https://github.com/agentclientprotocol/rust-sdk/pull/305))
+- *(conductor)* add v2 proxy initialization ([#302](https://github.com/agentclientprotocol/rust-sdk/pull/302))
+
 ### Added
 
 - Add opt-in protocol-v2 initialization for agent and nested proxy chains
diff --git a/src/agent-client-protocol-conductor/Cargo.toml b/src/agent-client-protocol-conductor/Cargo.toml
index 9c9b21cf..ca3310ad 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 = "2.0.0"
+version = "2.1.0"
 edition.workspace = true
 rust-version.workspace = true
 authors.workspace = true
diff --git a/src/agent-client-protocol-cookbook/CHANGELOG.md b/src/agent-client-protocol-cookbook/CHANGELOG.md
index 3f5eb618..1bc8b0ae 100644
--- a/src/agent-client-protocol-cookbook/CHANGELOG.md
+++ b/src/agent-client-protocol-cookbook/CHANGELOG.md
@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [2.1.0](https://github.com/agentclientprotocol/rust-sdk/compare/agent-client-protocol-cookbook-v2.0.0...agent-client-protocol-cookbook-v2.1.0) - 2026-08-05
+
+### Added
+
+- *(acp)* Add v2 proxy MCP attachment ([#314](https://github.com/agentclientprotocol/rust-sdk/pull/314))
+
 ## [2.0.0](https://github.com/agentclientprotocol/rust-sdk/compare/agent-client-protocol-cookbook-v1.3.0...agent-client-protocol-cookbook-v2.0.0) - 2026-07-23
 
 ### Changed
diff --git a/src/agent-client-protocol-cookbook/Cargo.toml b/src/agent-client-protocol-cookbook/Cargo.toml
index 741d3152..62069210 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 = "2.0.0"
+version = "2.1.0"
 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 bfc1b730..9e467b2b 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 = "2.0.0"
+version = "2.1.0"
 edition.workspace = true
 rust-version.workspace = true
 authors.workspace = true
diff --git a/src/agent-client-protocol-http/CHANGELOG.md b/src/agent-client-protocol-http/CHANGELOG.md
index c58d6bdd..67013965 100644
--- a/src/agent-client-protocol-http/CHANGELOG.md
+++ b/src/agent-client-protocol-http/CHANGELOG.md
@@ -2,6 +2,12 @@
 
 ## [Unreleased]
 
+## [2.1.0](https://github.com/agentclientprotocol/rust-sdk/compare/agent-client-protocol-http-v2.0.0...agent-client-protocol-http-v2.1.0) - 2026-08-05
+
+### Fixed
+
+- *(http)* Preserve outbound messages for slow streams ([#292](https://github.com/agentclientprotocol/rust-sdk/pull/292))
+
 ## [2.0.0](https://github.com/agentclientprotocol/rust-sdk/compare/agent-client-protocol-http-v1.3.0...agent-client-protocol-http-v2.0.0) - 2026-07-23
 
 ### Breaking changes
diff --git a/src/agent-client-protocol-http/Cargo.toml b/src/agent-client-protocol-http/Cargo.toml
index 799cc6cd..0950c02b 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 = "2.0.0"
+version = "2.1.0"
 edition.workspace = true
 rust-version.workspace = true
 authors.workspace = true
diff --git a/src/agent-client-protocol-polyfill/CHANGELOG.md b/src/agent-client-protocol-polyfill/CHANGELOG.md
index 8098b691..33802699 100644
--- a/src/agent-client-protocol-polyfill/CHANGELOG.md
+++ b/src/agent-client-protocol-polyfill/CHANGELOG.md
@@ -7,6 +7,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [2.1.0](https://github.com/agentclientprotocol/rust-sdk/compare/agent-client-protocol-polyfill-v2.0.0...agent-client-protocol-polyfill-v2.1.0) - 2026-08-05
+
+### Added
+
+- *(acp)* Add v2 proxy MCP attachment ([#314](https://github.com/agentclientprotocol/rust-sdk/pull/314))
+- *(polyfill)* Support v2 MCP-over-ACP bridge ([#305](https://github.com/agentclientprotocol/rust-sdk/pull/305))
+
 ### Added
 
 - Add an `unstable_protocol_v2` feature for using `McpOverAcpPolyfill` in a
diff --git a/src/agent-client-protocol-polyfill/Cargo.toml b/src/agent-client-protocol-polyfill/Cargo.toml
index 7ee9c333..ebbccd6a 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 = "2.0.0"
+version = "2.1.0"
 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 9811943c..84c75b4a 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]
 
+## [3.0.1](https://github.com/agentclientprotocol/rust-sdk/compare/agent-client-protocol-rmcp-v3.0.0...agent-client-protocol-rmcp-v3.0.1) - 2026-08-05
+
+### Other
+
+- updated the following local packages: agent-client-protocol
+
 ## [3.0.0](https://github.com/agentclientprotocol/rust-sdk/compare/agent-client-protocol-rmcp-v2.0.1...agent-client-protocol-rmcp-v3.0.0) - 2026-07-23
 
 ### Breaking changes
diff --git a/src/agent-client-protocol-rmcp/Cargo.toml b/src/agent-client-protocol-rmcp/Cargo.toml
index 9b6479f1..70f965ca 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 = "3.0.0"
+version = "3.0.1"
 edition.workspace = true
 rust-version.workspace = true
 authors.workspace = true
diff --git a/src/agent-client-protocol-trace-viewer/CHANGELOG.md b/src/agent-client-protocol-trace-viewer/CHANGELOG.md
index f9c795e8..72dd2646 100644
--- a/src/agent-client-protocol-trace-viewer/CHANGELOG.md
+++ b/src/agent-client-protocol-trace-viewer/CHANGELOG.md
@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [2.1.0](https://github.com/agentclientprotocol/rust-sdk/compare/agent-client-protocol-trace-viewer-v2.0.0...agent-client-protocol-trace-viewer-v2.1.0) - 2026-08-05
+
+### Other
+
+- update Cargo.lock dependencies
+
 ## [2.0.0](https://github.com/agentclientprotocol/rust-sdk/compare/agent-client-protocol-trace-viewer-v1.3.0...agent-client-protocol-trace-viewer-v2.0.0) - 2026-07-23
 
 ### Changed
diff --git a/src/agent-client-protocol-trace-viewer/Cargo.toml b/src/agent-client-protocol-trace-viewer/Cargo.toml
index f0bd2560..a5a914cf 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 = "2.0.0"
+version = "2.1.0"
 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 5ec93e8e..da2e56fd 100644
--- a/src/agent-client-protocol/CHANGELOG.md
+++ b/src/agent-client-protocol/CHANGELOG.md
@@ -2,6 +2,24 @@
 
 ## [Unreleased]
 
+## [2.1.0](https://github.com/agentclientprotocol/rust-sdk/compare/v2.0.0...v2.1.0) - 2026-08-05
+
+### Added
+
+- *(acp)* Add v2 proxy MCP attachment ([#314](https://github.com/agentclientprotocol/rust-sdk/pull/314))
+- *(acp)* Add v2 session MCP attachment ([#303](https://github.com/agentclientprotocol/rust-sdk/pull/303))
+- *(conductor)* add v2 proxy initialization ([#302](https://github.com/agentclientprotocol/rust-sdk/pull/302))
+- *(acp)* expose unstable LLM provider methods ([#298](https://github.com/agentclientprotocol/rust-sdk/pull/298))
+- *(unstable-v2)* Better v2 session builders ([#295](https://github.com/agentclientprotocol/rust-sdk/pull/295))
+- *(acp)* expose unstable plan operations ([#297](https://github.com/agentclientprotocol/rust-sdk/pull/297))
+- *(acp)* expose unstable tool-call names ([#296](https://github.com/agentclientprotocol/rust-sdk/pull/296))
+
+### Fixed
+
+- *(acp)* Allow v2 initialize with future params ([#304](https://github.com/agentclientprotocol/rust-sdk/pull/304))
+- *(acp)* preserve same-version initialize fields ([#299](https://github.com/agentclientprotocol/rust-sdk/pull/299))
+- *(acp)* Support WASI builds ([#294](https://github.com/agentclientprotocol/rust-sdk/pull/294))
+
 ### Added
 
 - *(unstable)* Expose programmatic tool-call names through the
diff --git a/src/agent-client-protocol/Cargo.toml b/src/agent-client-protocol/Cargo.toml
index 491cc4da..a72032f0 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 = "2.0.0"
+version = "2.1.0"
 edition.workspace = true
 rust-version.workspace = true
 authors.workspace = true