diff --git a/Cargo.lock b/Cargo.lock
index 6706ce2..b001fbc 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -137,8 +137,7 @@ dependencies = [
 [[package]]
 name = "agent-client-protocol-schema"
 version = "0.14.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b4e7eb6f1e554741f621ae4abb046d4fbb3cb88541bc599693ae7f9aa30b72eb"
+source = "git+https://github.com/daniel-agentee/agent-client-protocol?rev=b3bc550d96eae265412e19f3f1a653d700102c3b#b3bc550d96eae265412e19f3f1a653d700102c3b"
 dependencies = [
  "anyhow",
  "derive_more",
diff --git a/Cargo.toml b/Cargo.toml
index cd75b69..6fffd65 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -111,3 +111,7 @@ struct_field_names = "allow"
 too_many_lines = "allow"
 type_complexity = "allow"
 wildcard_imports = "allow"
+
+[patch.crates-io]
+# Temporary: consume session/setTitle schema types before they are released.
+agent-client-protocol-schema = { git = "https://github.com/daniel-agentee/agent-client-protocol", rev = "b3bc550d96eae265412e19f3f1a653d700102c3b" }
diff --git a/src/agent-client-protocol/src/schema/client_to_agent/requests.rs b/src/agent-client-protocol/src/schema/client_to_agent/requests.rs
index 7a4f233..d7bb5eb 100644
--- a/src/agent-client-protocol/src/schema/client_to_agent/requests.rs
+++ b/src/agent-client-protocol/src/schema/client_to_agent/requests.rs
@@ -5,6 +5,7 @@ use crate::schema::v1::{
     LogoutRequest, LogoutResponse, NewSessionRequest, NewSessionResponse, PromptRequest,
     PromptResponse, ResumeSessionRequest, ResumeSessionResponse, SetSessionConfigOptionRequest,
     SetSessionConfigOptionResponse, SetSessionModeRequest, SetSessionModeResponse,
+    SetSessionTitleRequest, SetSessionTitleResponse,
 };
 #[cfg(feature = "unstable_session_fork")]
 use crate::schema::v1::{ForkSessionRequest, ForkSessionResponse};
@@ -31,6 +32,11 @@ impl_jsonrpc_request!(
     SetSessionConfigOptionResponse,
     "session/set_config_option"
 );
+impl_jsonrpc_request!(
+    SetSessionTitleRequest,
+    SetSessionTitleResponse,
+    "session/setTitle"
+);
 
 #[cfg(feature = "unstable_session_fork")]
 impl_jsonrpc_request!(ForkSessionRequest, ForkSessionResponse, "session/fork");
diff --git a/src/agent-client-protocol/src/schema/enum_impls.rs b/src/agent-client-protocol/src/schema/enum_impls.rs
index 680158b..b730ddc 100644
--- a/src/agent-client-protocol/src/schema/enum_impls.rs
+++ b/src/agent-client-protocol/src/schema/enum_impls.rs
@@ -24,6 +24,7 @@ impl_jsonrpc_request_enum!(ClientRequest {
     CloseSessionRequest => "session/close",
     SetSessionModeRequest => "session/set_mode",
     SetSessionConfigOptionRequest => "session/set_config_option",
+    SetSessionTitleRequest => "session/setTitle",
     PromptRequest => "session/prompt",
     #[cfg(feature = "unstable_mcp_over_acp")]
     MessageMcpRequest => "mcp/message",
diff --git a/src/agent-client-protocol/tests/protocol_v2.rs b/src/agent-client-protocol/tests/protocol_v2.rs
index f05f032..eb8c4c1 100644
--- a/src/agent-client-protocol/tests/protocol_v2.rs
+++ b/src/agent-client-protocol/tests/protocol_v2.rs
@@ -524,7 +524,9 @@ async fn v2_client_and_agent_negotiate_v2() -> Result<(), Error> {
         .on_receive_request(
             async |initialize: v2::InitializeRequest, responder, _cx| {
                 assert_eq!(initialize.protocol_version, ProtocolVersion::V2);
-                responder.respond(v2::InitializeResponse::new(initialize.protocol_version))
+                responder.respond(v2_initialize_response_with_session(
+                    initialize.protocol_version,
+                ))
             },
             agent_client_protocol::on_receive_request!(),
         )