diff --git a/Cargo.lock b/Cargo.lock
index 196a514..3fc86a3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4,7 +4,7 @@ version = 4
 
 [[package]]
 name = "agent-client-protocol"
-version = "0.11.1"
+version = "0.12.0"
 dependencies = [
  "agent-client-protocol-derive",
  "agent-client-protocol-schema",
@@ -30,7 +30,7 @@ dependencies = [
 
 [[package]]
 name = "agent-client-protocol-conductor"
-version = "0.11.1"
+version = "0.12.0"
 dependencies = [
  "agent-client-protocol",
  "agent-client-protocol-polyfill",
@@ -59,7 +59,7 @@ dependencies = [
 
 [[package]]
 name = "agent-client-protocol-cookbook"
-version = "0.11.1"
+version = "0.11.2"
 dependencies = [
  "agent-client-protocol",
  "agent-client-protocol-rmcp",
@@ -71,7 +71,7 @@ dependencies = [
 
 [[package]]
 name = "agent-client-protocol-derive"
-version = "0.11.0"
+version = "0.11.1"
 dependencies = [
  "quote",
  "syn",
@@ -98,7 +98,7 @@ dependencies = [
 
 [[package]]
 name = "agent-client-protocol-rmcp"
-version = "0.11.1"
+version = "0.11.2"
 dependencies = [
  "agent-client-protocol",
  "futures-concurrency",
@@ -146,7 +146,7 @@ dependencies = [
 
 [[package]]
 name = "agent-client-protocol-trace-viewer"
-version = "0.11.0"
+version = "0.11.1"
 dependencies = [
  "anyhow",
  "axum",
diff --git a/Cargo.toml b/Cargo.toml
index d4b7677..6120c4e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,12 +21,12 @@ homepage = "https://github.com/agentclientprotocol/rust-sdk"
 
 [workspace.dependencies]
 # Internal crates
-agent-client-protocol = { path = "src/agent-client-protocol", version = "0.11.1" }
-agent-client-protocol-conductor = { path = "src/agent-client-protocol-conductor", version = "0.11.1" }
-agent-client-protocol-derive = { path = "src/agent-client-protocol-derive", version = "0.11.0" }
-agent-client-protocol-rmcp = { path = "src/agent-client-protocol-rmcp", version = "0.11.1" }
+agent-client-protocol = { path = "src/agent-client-protocol", version = "0.12.0" }
+agent-client-protocol-conductor = { path = "src/agent-client-protocol-conductor", version = "0.12.0" }
+agent-client-protocol-derive = { path = "src/agent-client-protocol-derive", version = "0.11.1" }
+agent-client-protocol-rmcp = { path = "src/agent-client-protocol-rmcp", version = "0.11.2" }
 agent-client-protocol-test = { path = "src/agent-client-protocol-test" }
-agent-client-protocol-trace-viewer = { path = "src/agent-client-protocol-trace-viewer", version = "0.11.0" }
+agent-client-protocol-trace-viewer = { path = "src/agent-client-protocol-trace-viewer", version = "0.11.1" }
 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 dff6406..9699185 100644
--- a/src/agent-client-protocol-conductor/CHANGELOG.md
+++ b/src/agent-client-protocol-conductor/CHANGELOG.md
@@ -7,6 +7,20 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.12.0](https://github.com/agentclientprotocol/rust-sdk/compare/agent-client-protocol-conductor-v0.11.1...agent-client-protocol-conductor-v0.12.0) - 2026-05-16
+
+### Added
+
+- extract mcp-over-acp proxy ([#146](https://github.com/agentclientprotocol/rust-sdk/pull/146))
+- remove direct dependency on tokio  ([#145](https://github.com/agentclientprotocol/rust-sdk/pull/145))
+
+### Other
+
+- *(deps)* update Rust dependencies ([#166](https://github.com/agentclientprotocol/rust-sdk/pull/166))
+- *(deps)* bump the minor group with 7 updates ([#152](https://github.com/agentclientprotocol/rust-sdk/pull/152))
+- Trim dependencies ([#149](https://github.com/agentclientprotocol/rust-sdk/pull/149))
+- remove unreachable!() and improve error messages ([#139](https://github.com/agentclientprotocol/rust-sdk/pull/139))
+
 ### Breaking Changes
 
 - **Removed `McpBridgeMode`** and the `mcp_bridge_mode` parameter from `ConductorImpl::new`, `new_agent`, and `new_proxy`. MCP-over-ACP bridging is no longer built into the conductor. Use `agent-client-protocol-polyfill::mcp_over_acp::McpOverAcpPolyfill` as a proxy in the chain instead.
diff --git a/src/agent-client-protocol-conductor/Cargo.toml b/src/agent-client-protocol-conductor/Cargo.toml
index 11e0e41..3c23b3b 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 = "0.11.1"
+version = "0.12.0"
 edition.workspace = true
 authors.workspace = true
 license.workspace = true
diff --git a/src/agent-client-protocol-cookbook/CHANGELOG.md b/src/agent-client-protocol-cookbook/CHANGELOG.md
index 1ece6d0..ae6184d 100644
--- a/src/agent-client-protocol-cookbook/CHANGELOG.md
+++ b/src/agent-client-protocol-cookbook/CHANGELOG.md
@@ -7,6 +7,16 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.11.2](https://github.com/agentclientprotocol/rust-sdk/compare/agent-client-protocol-cookbook-v0.11.1...agent-client-protocol-cookbook-v0.11.2) - 2026-05-16
+
+### Added
+
+- remove direct dependency on tokio  ([#145](https://github.com/agentclientprotocol/rust-sdk/pull/145))
+
+### Other
+
+- Trim dependencies ([#149](https://github.com/agentclientprotocol/rust-sdk/pull/149))
+
 ## [0.11.1](https://github.com/agentclientprotocol/rust-sdk/compare/agent-client-protocol-cookbook-v0.11.0...agent-client-protocol-cookbook-v0.11.1) - 2026-04-21
 
 ### Other
diff --git a/src/agent-client-protocol-cookbook/Cargo.toml b/src/agent-client-protocol-cookbook/Cargo.toml
index b984618..88bf399 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 = "0.11.1"
+version = "0.11.2"
 edition.workspace = true
 authors.workspace = true
 license.workspace = true
diff --git a/src/agent-client-protocol-derive/CHANGELOG.md b/src/agent-client-protocol-derive/CHANGELOG.md
index 688d84e..5930984 100644
--- a/src/agent-client-protocol-derive/CHANGELOG.md
+++ b/src/agent-client-protocol-derive/CHANGELOG.md
@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.11.1](https://github.com/agentclientprotocol/rust-sdk/compare/agent-client-protocol-derive-v0.11.0...agent-client-protocol-derive-v0.11.1) - 2026-05-16
+
+### Other
+
+- Trim dependencies ([#149](https://github.com/agentclientprotocol/rust-sdk/pull/149))
+
 ## [0.11.0](https://github.com/agentclientprotocol/rust-sdk/releases/tag/agent-client-protocol-derive-v0.11.0) - 2026-04-20
 
 ### Added
diff --git a/src/agent-client-protocol-derive/Cargo.toml b/src/agent-client-protocol-derive/Cargo.toml
index 6cadf0e..fb3ba7b 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 = "0.11.0"
+version = "0.11.1"
 edition.workspace = true
 authors.workspace = true
 license.workspace = true
diff --git a/src/agent-client-protocol-polyfill/CHANGELOG.md b/src/agent-client-protocol-polyfill/CHANGELOG.md
new file mode 100644
index 0000000..9ea42cf
--- /dev/null
+++ b/src/agent-client-protocol-polyfill/CHANGELOG.md
@@ -0,0 +1,14 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [0.11.1](https://github.com/agentclientprotocol/rust-sdk/releases/tag/agent-client-protocol-polyfill-v0.11.1) - 2026-05-16
+
+### Added
+
+- extract mcp-over-acp proxy ([#146](https://github.com/agentclientprotocol/rust-sdk/pull/146))
diff --git a/src/agent-client-protocol-rmcp/CHANGELOG.md b/src/agent-client-protocol-rmcp/CHANGELOG.md
index 5069019..7db895d 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]
 
+## [0.11.2](https://github.com/agentclientprotocol/rust-sdk/compare/agent-client-protocol-rmcp-v0.11.1...agent-client-protocol-rmcp-v0.11.2) - 2026-05-16
+
+### Other
+
+- Trim dependencies ([#149](https://github.com/agentclientprotocol/rust-sdk/pull/149))
+
 ## [0.11.1](https://github.com/agentclientprotocol/rust-sdk/compare/agent-client-protocol-rmcp-v0.11.0...agent-client-protocol-rmcp-v0.11.1) - 2026-04-21
 
 ### Other
diff --git a/src/agent-client-protocol-rmcp/Cargo.toml b/src/agent-client-protocol-rmcp/Cargo.toml
index 34f196e..bc84c54 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 = "0.11.1"
+version = "0.11.2"
 edition.workspace = true
 authors.workspace = true
 license.workspace = true
diff --git a/src/agent-client-protocol-trace-viewer/CHANGELOG.md b/src/agent-client-protocol-trace-viewer/CHANGELOG.md
index f3063f4..bfdd2c6 100644
--- a/src/agent-client-protocol-trace-viewer/CHANGELOG.md
+++ b/src/agent-client-protocol-trace-viewer/CHANGELOG.md
@@ -7,6 +7,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.11.1](https://github.com/agentclientprotocol/rust-sdk/compare/agent-client-protocol-trace-viewer-v0.11.0...agent-client-protocol-trace-viewer-v0.11.1) - 2026-05-16
+
+### Other
+
+- Trim dependencies ([#149](https://github.com/agentclientprotocol/rust-sdk/pull/149))
+- remove unreachable!() and improve error messages ([#139](https://github.com/agentclientprotocol/rust-sdk/pull/139))
+
 ## [0.11.0](https://github.com/agentclientprotocol/rust-sdk/releases/tag/agent-client-protocol-trace-viewer-v0.11.0) - 2026-04-20
 
 ### Added
diff --git a/src/agent-client-protocol-trace-viewer/Cargo.toml b/src/agent-client-protocol-trace-viewer/Cargo.toml
index ed57607..fc71379 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 = "0.11.0"
+version = "0.11.1"
 edition.workspace = true
 authors.workspace = true
 license.workspace = true
diff --git a/src/agent-client-protocol/CHANGELOG.md b/src/agent-client-protocol/CHANGELOG.md
index b283a4c..2583e08 100644
--- a/src/agent-client-protocol/CHANGELOG.md
+++ b/src/agent-client-protocol/CHANGELOG.md
@@ -2,6 +2,24 @@
 
 ## [Unreleased]
 
+## [0.12.0](https://github.com/agentclientprotocol/rust-sdk/compare/v0.11.1...v0.12.0) - 2026-05-16
+
+### Added
+
+- *(acp)* add unstable session delete support ([#165](https://github.com/agentclientprotocol/rust-sdk/pull/165))
+- extract mcp-over-acp proxy ([#146](https://github.com/agentclientprotocol/rust-sdk/pull/146))
+- Stabilize session/close and session/resume ([#147](https://github.com/agentclientprotocol/rust-sdk/pull/147))
+- remove direct dependency on tokio  ([#145](https://github.com/agentclientprotocol/rust-sdk/pull/145))
+
+### Fixed
+
+- propagate client connection errors and check capability value truthiness ([#108](https://github.com/agentclientprotocol/rust-sdk/pull/108))
+
+### Other
+
+- Trim dependencies ([#149](https://github.com/agentclientprotocol/rust-sdk/pull/149))
+- remove unreachable!() and improve error messages ([#139](https://github.com/agentclientprotocol/rust-sdk/pull/139))
+
 ### Breaking Changes
 
 - **Removed `McpAcpTransport`** struct and its `MetaCapability` impl. MCP-over-ACP support is now advertised via `mcpCapabilities.acp` in `InitializeResponse`, not `_meta.symposium.mcp_acp_transport`.
diff --git a/src/agent-client-protocol/Cargo.toml b/src/agent-client-protocol/Cargo.toml
index 65b20f4..1662851 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 = "0.11.1"
+version = "0.12.0"
 edition.workspace = true
 authors.workspace = true
 license.workspace = true