diff --git a/crates/client/vendor/github.com/containerd/containerd/api/services/images/v1/images.proto b/crates/client/vendor/github.com/containerd/containerd/api/services/images/v1/images.proto
index 2f47ab28..97862c45 100644
--- a/crates/client/vendor/github.com/containerd/containerd/api/services/images/v1/images.proto
+++ b/crates/client/vendor/github.com/containerd/containerd/api/services/images/v1/images.proto
@@ -145,5 +145,5 @@ message DeleteImageRequest {
 	//
 	// If image descriptor does not match the same digest,
 	// the delete operation will return "not found" error.
-	optional containerd.types.Descriptor target = 3;
+	containerd.types.Descriptor target = 3;
 }
diff --git a/crates/client/vendor/github.com/containerd/containerd/api/types/fieldpath.proto b/crates/client/vendor/github.com/containerd/containerd/api/types/fieldpath.proto
index 8b290842..01ff1066 100644
--- a/crates/client/vendor/github.com/containerd/containerd/api/types/fieldpath.proto
+++ b/crates/client/vendor/github.com/containerd/containerd/api/types/fieldpath.proto
@@ -34,9 +34,9 @@ import "google/protobuf/descriptor.proto";
 option go_package = "github.com/containerd/containerd/api/types;types";
 
 extend google.protobuf.FileOptions {
-	optional bool fieldpath_all = 63300;
+	bool fieldpath_all = 63300;
 }
 
 extend google.protobuf.MessageOptions {
-	optional bool fieldpath = 64400;
+	bool fieldpath = 64400;
 }
diff --git a/crates/shim-protos/Cargo.toml b/crates/shim-protos/Cargo.toml
index 6440f8e4..bfcef35f 100644
--- a/crates/shim-protos/Cargo.toml
+++ b/crates/shim-protos/Cargo.toml
@@ -52,7 +52,7 @@ async-trait = { workspace = true, optional = true }
 # protobuf 3.5 introduces a breaking change: https://github.com/containerd/rust-extensions/issues/295
 # pinning to <3.5.0 until we can update the generated code
 protobuf = ">= 3.0, <3.5.0"
-ttrpc = "0.8.2"
+ttrpc = "0.8.3"
 
 [build-dependencies]
 ttrpc-codegen = "0.4.2"
diff --git a/crates/shim/src/asynchronous/mod.rs b/crates/shim/src/asynchronous/mod.rs
index 4a145310..1c5dae03 100644
--- a/crates/shim/src/asynchronous/mod.rs
+++ b/crates/shim/src/asynchronous/mod.rs
@@ -177,8 +177,9 @@ where
             }
 
             let publisher = RemotePublisher::new(&ttrpc_address).await?;
-            let task = shim.create_task_service(publisher).await;
-            let task_service = create_task(Arc::new(Box::new(task)));
+            let task = Box::new(shim.create_task_service(publisher).await)
+                as Box<dyn containerd_shim_protos::shim_async::Task + Send + Sync>;
+            let task_service = create_task(Arc::from(task));
             let mut server = Server::new().register_service(task_service);
             server = server.add_listener(SOCKET_FD)?;
             server = server.set_domain_unix();
diff --git a/crates/shim/src/synchronous/mod.rs b/crates/shim/src/synchronous/mod.rs
index d1cfcc38..4db42571 100644
--- a/crates/shim/src/synchronous/mod.rs
+++ b/crates/shim/src/synchronous/mod.rs
@@ -265,8 +265,9 @@ where
             }
 
             let publisher = publisher::RemotePublisher::new(&ttrpc_address)?;
-            let task = shim.create_task_service(publisher);
-            let task_service = create_task(Arc::new(Box::new(task)));
+            let task = Box::new(shim.create_task_service(publisher))
+                as Box<dyn containerd_shim_protos::Task + Send + Sync + 'static>;
+            let task_service = create_task(Arc::from(task));
             let mut server = create_server(flags)?;
             server = server.register_service(task_service);
             server.start()?;
diff --git a/crates/shim/src/synchronous/publisher.rs b/crates/shim/src/synchronous/publisher.rs
index 7e90d7a2..fe09d68c 100644
--- a/crates/shim/src/synchronous/publisher.rs
+++ b/crates/shim/src/synchronous/publisher.rs
@@ -188,7 +188,8 @@ mod tests {
             use std::os::unix::{io::AsRawFd, net::UnixListener};
             let listener = UnixListener::bind(server_address).unwrap();
             listener.set_nonblocking(true).unwrap();
-            let service = client::create_events(Arc::new(Box::new(FakeServer {})));
+            let task = Box::new(FakeServer {}) as Box<dyn Events + Send + Sync>;
+            let service = client::create_events(task.into());
             let server = Server::new()
                 .add_listener(listener.as_raw_fd())
                 .unwrap()