diff --git a/Socket.IO-Client-Swift.podspec b/Socket.IO-Client-Swift.podspec
index d746af8..f92ea64 100644
--- a/Socket.IO-Client-Swift.podspec
+++ b/Socket.IO-Client-Swift.podspec
@@ -24,5 +24,5 @@ Pod::Spec.new do |s|
       'SWIFT_VERSION' => '3.1'
   }
   s.source_files  = "Source/*.swift"
-  s.dependency "StarscreamSocketIO", "~> 8.0.2"
+  s.dependency "StarscreamSocketIO", "~> 8.0.3"
 end
diff --git a/SocketIO-MacTests/SocketSideEffectTest.swift b/SocketIO-MacTests/SocketSideEffectTest.swift
index 345c7b8..ab12640 100644
--- a/SocketIO-MacTests/SocketSideEffectTest.swift
+++ b/SocketIO-MacTests/SocketSideEffectTest.swift
@@ -83,15 +83,39 @@ class SocketSideEffectTest: XCTestCase {
         waitForExpectations(timeout: 3, handler: nil)
     }
 
+    func testHandleOnceClientEvent() {
+        let expect = expectation(description: "handled event")
+
+        socket.once(clientEvent: .connect) {data, ack in
+            XCTAssertEqual(self.socket.testHandlers.count, 0)
+            expect.fulfill()
+        }
+
+        DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + 0.1) {
+            // Fake connecting
+            self.socket.parseEngineMessage("0/")
+        }
+
+        waitForExpectations(timeout: 3, handler: nil)
+    }
+
     func testOffWithEvent() {
         socket.on("test") {data, ack in }
-        XCTAssertEqual(socket.testHandlers.count, 1)
         socket.on("test") {data, ack in }
         XCTAssertEqual(socket.testHandlers.count, 2)
         socket.off("test")
         XCTAssertEqual(socket.testHandlers.count, 0)
     }
 
+    func testOffClientEvent() {
+        socket.on(clientEvent: .connect) {data, ack in }
+        socket.on(clientEvent: .disconnect) {data, ack in }
+        XCTAssertEqual(socket.testHandlers.count, 2)
+        socket.off(clientEvent: .disconnect)
+        XCTAssertEqual(socket.testHandlers.count, 1)
+        XCTAssertTrue(socket.testHandlers.contains(where: { $0.event == "connect" }))
+    }
+
     func testOffWithId() {
         let handler = socket.on("test") {data, ack in }
         XCTAssertEqual(socket.testHandlers.count, 1)
diff --git a/Source/SocketIOClient.swift b/Source/SocketIOClient.swift
index 1aba6c1..c70685b 100644
--- a/Source/SocketIOClient.swift
+++ b/Source/SocketIOClient.swift
@@ -439,6 +439,15 @@ open class SocketIOClient : NSObject, SocketIOClientSpec, SocketEngineClient, So
         }
     }
 
+    /// Removes handler(s) for a client event.
+    ///
+    /// If you wish to remove a client event handler, call the `off(id:)` with the UUID received from its `on` call.
+    ///
+    /// - parameter clientEvent: The event to remove handlers for.
+    open func off(clientEvent event: SocketClientEvent) {
+        off(event.rawValue)
+    }
+
     /// Removes handler(s) based on an event name.
     ///
     /// If you wish to remove a specific event, call the `off(id:)` with the UUID received from its `on` call.
@@ -499,6 +508,16 @@ open class SocketIOClient : NSObject, SocketIOClientSpec, SocketEngineClient, So
         return handler.id
     }
 
+    /// Adds a single-use handler for a client event.
+    ///
+    /// - parameter clientEvent: The event for this handler.
+    /// - parameter callback: The callback that will execute when this event is received.
+    /// - returns: A unique id for the handler that can be used to remove it.
+    @discardableResult
+    open func once(clientEvent event: SocketClientEvent, callback: @escaping NormalCallback) -> UUID {
+        return once(event.rawValue, callback: callback)
+    }
+
     /// Adds a single-use handler for an event.
     ///
     /// - parameter event: The event name for this handler.
diff --git a/Source/Starscream b/Source/Starscream
index 53003d3..4ae6fe9 160000
--- a/Source/Starscream
+++ b/Source/Starscream
@@ -1 +1 @@
-Subproject commit 53003d342e17c8cdf54924adfb8a18a056a58c3d
+Subproject commit 4ae6fe995316a49e7ac4ee0aaba9b3a0ba7f774d