diff --git a/README.md b/README.md
index 4933e3c..405e951 100644
--- a/README.md
+++ b/README.md
@@ -78,12 +78,18 @@ Install pods:
 $ pod install
 ```
 
-Import in your swift file:
+Import the module:
 
+Swift:
 ```swift
 import Socket_IO_Client_Swift
 ```
 
+Objective-C:
+```Objective-C
+#import <Socket_IO_Client_Swift/Socket_IO_Client_Swift-Swift.h>
+```
+
 ##API
 Constructors
 -----------
@@ -104,6 +110,7 @@ Options
 - `log: Bool` If `true` socket will log debug messages. Default is false.
 - `sessionDelegate: NSURLSessionDelegate` Sets an NSURLSessionDelegate for the underlying engine. Useful if you need to handle self-signed certs. Default is nil.
 - `path: String` - If the server uses a custom path. ex: `"/swift"`. Default is `""`
+- `extraHeaders: [String: String]?` - Adds custom headers to the initial request. Default is nil.
 
 Methods
 -------
diff --git a/Socket.IO-Client-Swift.podspec b/Socket.IO-Client-Swift.podspec
index b2e4519..1848cb9 100644
--- a/Socket.IO-Client-Swift.podspec
+++ b/Socket.IO-Client-Swift.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name         = "Socket.IO-Client-Swift"
-  s.version      = "2.3.6"
+  s.version      = "2.3.7"
   s.summary      = "Socket.IO-client for iOS and OS X"
   s.description  = <<-DESC
                    Socket.IO-client for iOS and OS X.
@@ -12,7 +12,7 @@ Pod::Spec.new do |s|
   s.author       = { "Erik" => "nuclear.ace@gmail.com" }
   s.ios.deployment_target = '8.0'
   s.osx.deployment_target = '10.10'
-  s.source       = { :git => "https://github.com/socketio/socket.io-client-swift.git", :tag => 'v2.3.6' }
+  s.source       = { :git => "https://github.com/socketio/socket.io-client-swift.git", :tag => 'v2.3.7' }
   s.source_files  = "SocketIOClientSwift/**/*.swift"
   s.requires_arc = true
   # s.dependency 'Starscream', '~> 0.9' # currently this repo includes Starscream swift files
diff --git a/SocketIOClientSwift/SocketEngine.swift b/SocketIOClientSwift/SocketEngine.swift
index ab390b5..2437c1a 100644
--- a/SocketIOClientSwift/SocketEngine.swift
+++ b/SocketIOClientSwift/SocketEngine.swift
@@ -37,6 +37,7 @@ public final class SocketEngine: NSObject, WebSocketDelegate, SocketLogClient {
 
     private var closed = false
     private var _connected = false
+    private var extraHeaders:[String: String]?
     private var fastUpgrade = false
     private var forcePolling = false
     private var forceWebsockets = false
@@ -109,6 +110,7 @@ public final class SocketEngine: NSObject, WebSocketDelegate, SocketLogClient {
         cookies = opts?["cookies"] as? [NSHTTPCookie]
         log = opts?["log"] as? Bool ?? false
         socketPath = opts?["path"] as? String ?? ""
+        extraHeaders = opts?["extraHeaders"] as? [String: String]
     }
 
     deinit {
@@ -194,6 +196,13 @@ public final class SocketEngine: NSObject, WebSocketDelegate, SocketLogClient {
     private func createWebsocket(andConnect connect:Bool) {
         ws = WebSocket(url: NSURL(string: urlWebSocket! + "&sid=\(sid)")!,
             cookies: cookies)
+        
+        if extraHeaders != nil {
+            for (headerName, value) in extraHeaders! {
+                ws?.headers[headerName] = value
+            }
+        }
+        
         ws?.queue = handleQueue
         ws?.delegate = self
 
@@ -228,7 +237,13 @@ public final class SocketEngine: NSObject, WebSocketDelegate, SocketLogClient {
             let headers = NSHTTPCookie.requestHeaderFieldsWithCookies(cookies!)
             req.allHTTPHeaderFields = headers
         }
-
+        
+        if extraHeaders != nil {
+            for (headerName, value) in extraHeaders! {
+                req.setValue(value, forHTTPHeaderField: headerName)
+            }
+        }
+        
         doRequest(req)
     }
 
@@ -476,7 +491,13 @@ public final class SocketEngine: NSObject, WebSocketDelegate, SocketLogClient {
             let headers = NSHTTPCookie.requestHeaderFieldsWithCookies(cookies!)
             reqPolling.allHTTPHeaderFields = headers
         }
-
+ 
+        if extraHeaders != nil {
+            for (headerName, value) in extraHeaders! {
+                reqPolling.setValue(value, forHTTPHeaderField: headerName)
+            }
+        }
+        
         doRequest(reqPolling)
     }