diff --git a/Cargo.lock b/Cargo.lock
index 3b111b1f..616830c2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3951,7 +3951,7 @@ checksum = "13c2bddecc57b384dee18652358fb23172facb8a2c51ccc10d74c157bdea3292"
 
 [[package]]
 name = "symposium-acp-agent"
-version = "1.1.1"
+version = "1.2.0"
 dependencies = [
  "anyhow",
  "chrono",
diff --git a/src/symposium-acp-agent/CHANGELOG.md b/src/symposium-acp-agent/CHANGELOG.md
index 2e894536..b78d9d06 100644
--- a/src/symposium-acp-agent/CHANGELOG.md
+++ b/src/symposium-acp-agent/CHANGELOG.md
@@ -1,5 +1,73 @@
 # Changelog
 
+## [1.2.0](https://github.com/symposium-dev/symposium/compare/symposium-acp-agent-v1.1.1...symposium-acp-agent-v1.2.0) - 2026-01-08
+
+### Added
+
+- add configurable agent extensions UI
+- add --log-file option to vscodelm_cli example
+- add vscodelm_cli example for debugging tool invocation
+- accept RUST_LOG-style filter strings in --log argument
+- race peek against cancellation in handle_vscode_tool_invocation
+- expose one language model per ACP agent
+- stream tool calls as markdown in VS Code LM provider
+- pass chat request options from VS Code to Rust backend
+- introduce HistoryActor for centralized session state management
+- implement agent-internal tool permission bridging for vscodelm
+- add cancellation support for vscodelm
+- support AgentDefinition enum in vscodelm protocol
+- add configurable agent backend to vscodelm
+- add session UUID logging to vscodelm
+- add session actor for VS Code LM provider
+- *(vscodelm)* implement Component trait and add tests
+- *(vscode)* add Language Model Provider prototype
+
+### Fixed
+
+- strip mcp__ prefix in vscode_tools call_tool handler
+- auto-approve tool requests from vscode tools
+- don't race against stale cancel_rx when waiting for tool result
+- don't race against stale cancel_rx when waiting for tool result
+- use actual Eliza response in multi-turn test history
+- defer session creation until first request arrives
+- use VscodeToolsProxy in Conductor chain for MCP-over-ACP
+- wrap agent in Conductor for MCP-over-ACP negotiation
+- normalize messages for history matching
+- correct McpServer serialization format in TypeScript
+- handle all VS Code LM message part types correctly
+
+### Other
+
+- Use spawn_blocking for binary download in resolve_distribution
+- VSCode extension uses symposium-acp-agent registry commands
+- Add registry subcommands and dynamic agent fetching
+- Simplify Ferris component initialization
+- Add unit tests for ConfigurationAgent
+- Add act-as-configured mode for simplified editor setup
+- Consolidate symposium-acp-proxy into symposium-acp-agent
+- rename mcp server
+- clarify why we are dropping request_state
+- more DRY
+- move vscodelm tests to separate module
+- remove flaky vscodelm integration tests
+- add vscodelm integration tests with expect_test assertions
+- Revert "fix: use VscodeToolsProxy in Conductor chain for MCP-over-ACP"
+- add RequestState::on_cancel helper for racing cancellation
+- add cancel_tool_invocation helper and clean up race formatting
+- handle_vscode_tool_invocation takes ownership pattern
+- replace tokio::select! with futures-concurrency race
+- pass invocation_tx to VscodeToolsMcpServer constructor
+- apply edits from nikomatsakis review
+- refactor session model and unify ContentPart type
+- use MatchMessage in process_session_message
+- use futures channels and merged streams for vscodelm cancellation
+- cleanup logging a bit
+- cleanup the method flow
+- cleanup the test to avoid mutex
+- *(vscodelm)* use expect-test for snapshot testing
+- *(vscodelm)* remove unnecessary Arc<Mutex> from Eliza state
+- *(vscodelm)* use sacp infrastructure for JSON-RPC
+
 ## [1.1.1](https://github.com/symposium-dev/symposium/compare/symposium-acp-agent-v1.1.0...symposium-acp-agent-v1.1.1) - 2026-01-01
 
 ### Other
diff --git a/src/symposium-acp-agent/Cargo.toml b/src/symposium-acp-agent/Cargo.toml
index ebcda1ab..d52abd23 100644
--- a/src/symposium-acp-agent/Cargo.toml
+++ b/src/symposium-acp-agent/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "symposium-acp-agent"
-version = "1.1.1"
+version = "1.2.0"
 edition = "2021"
 license = "Apache-2.0"
 description = "Symposium-enriched ACP agent that wraps downstream agents with enhanced capabilities"