diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5602a919..42a3de0a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,24 @@
 # Changelog
 
+## [1.2.0](https://github.com/agentclientprotocol/agent-client-protocol/compare/v1.1.0...v1.2.0) - 2026-06-27
+
+### Added
+
+- *(unstable-v2)* use EnvVariable for terminal auth env ([#1522](https://github.com/agentclientprotocol/agent-client-protocol/pull/1522))
+- *(unstable-v2)* Require auth logout support ([#1520](https://github.com/agentclientprotocol/agent-client-protocol/pull/1520))
+- *(unstable-v2)* Group v2 auth methods under auth/* ([#1519](https://github.com/agentclientprotocol/agent-client-protocol/pull/1519))
+- *(unstable-v2)* require v2 implementation info ([#1517](https://github.com/agentclientprotocol/agent-client-protocol/pull/1517))
+
+### Fixed
+
+- Deserialization leniency part 2 ([#1526](https://github.com/agentclientprotocol/agent-client-protocol/pull/1526))
+- *(unstable-v2)* make mcpServers optional in new sessions ([#1523](https://github.com/agentclientprotocol/agent-client-protocol/pull/1523))
+- *(rust)* Clean up Protocol version handling ([#1515](https://github.com/agentclientprotocol/agent-client-protocol/pull/1515))
+
+### Other
+
+- *(schema)* correct Implementation description ([#1518](https://github.com/agentclientprotocol/agent-client-protocol/pull/1518))
+
 ## [1.1.0](https://github.com/agentclientprotocol/agent-client-protocol/compare/v1.0.0...v1.1.0) - 2026-06-24
 
 ### Added
diff --git a/Cargo.lock b/Cargo.lock
index 3c5110c0..a5d767bc 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4,7 +4,7 @@ version = 4
 
 [[package]]
 name = "agent-client-protocol-json-schema-v1"
-version = "1.16.0"
+version = "1.16.1"
 
 [[package]]
 name = "agent-client-protocol-json-schema-v2"
@@ -12,7 +12,7 @@ version = "2.0.0-alpha.0"
 
 [[package]]
 name = "agent-client-protocol-schema"
-version = "1.1.0"
+version = "1.2.0"
 dependencies = [
  "anyhow",
  "derive_more",
diff --git a/Cargo.toml b/Cargo.toml
index 9c8baadd..0158b335 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,7 +14,7 @@ members = [
 resolver = "3"
 
 [workspace.dependencies]
-agent-client-protocol-schema = { path = "agent-client-protocol-schema", version = "1.1.0" }
+agent-client-protocol-schema = { path = "agent-client-protocol-schema", version = "1.2.0" }
 
 [workspace.lints.rust]
 future_incompatible = { level = "warn", priority = -1 }
diff --git a/agent-client-protocol-schema/Cargo.toml b/agent-client-protocol-schema/Cargo.toml
index e77820a9..525610f5 100644
--- a/agent-client-protocol-schema/Cargo.toml
+++ b/agent-client-protocol-schema/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "agent-client-protocol-schema"
 authors = ["Zed <hi@zed.dev>"]
-version = "1.1.0"
+version = "1.2.0"
 edition = "2024"
 license = "Apache-2.0"
 description = "A protocol for standardizing communication between code editors and AI coding agents"
diff --git a/schema/v1/CHANGELOG.md b/schema/v1/CHANGELOG.md
index 879f3a83..b881ebde 100644
--- a/schema/v1/CHANGELOG.md
+++ b/schema/v1/CHANGELOG.md
@@ -7,6 +7,17 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.16.1](https://github.com/agentclientprotocol/agent-client-protocol/compare/schema-v1.16.0...schema-v1.16.1) - 2026-06-27
+
+### Fixed
+
+- Deserialization leniency part 2 ([#1526](https://github.com/agentclientprotocol/agent-client-protocol/pull/1526))
+- *(unstable-v2)* make mcpServers optional in new sessions ([#1523](https://github.com/agentclientprotocol/agent-client-protocol/pull/1523))
+
+### Other
+
+- *(schema)* correct Implementation description ([#1518](https://github.com/agentclientprotocol/agent-client-protocol/pull/1518))
+
 ## [1.16.0](https://github.com/agentclientprotocol/agent-client-protocol/compare/schema-v1.15.0...schema-v1.16.0) - 2026-06-24
 
 ### Added
diff --git a/schema/v1/Cargo.toml b/schema/v1/Cargo.toml
index 6c92fab4..0ee8a593 100644
--- a/schema/v1/Cargo.toml
+++ b/schema/v1/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "agent-client-protocol-json-schema-v1"
-version = "1.16.0"
+version = "1.16.1"
 edition = "2024"
 license = "Apache-2.0"
 description = "Version marker for ACP v1 JSON Schema GitHub releases"