diff --git a/CHANGELOG.md b/CHANGELOG.md
index 826a3d6..3c6de32 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# 13.1.1
+
+- Fix [#923](https://github.com/socketio/socket.io-client-swift/issues/923)
+
 # v13.1.0
 
 - Allow setting `SocketEngineSpec.extraHeaders` after init.
diff --git a/Socket.IO-Client-Swift.podspec b/Socket.IO-Client-Swift.podspec
index 62d19be..520eaef 100644
--- a/Socket.IO-Client-Swift.podspec
+++ b/Socket.IO-Client-Swift.podspec
@@ -1,7 +1,7 @@
 Pod::Spec.new do |s|
   s.name         = "Socket.IO-Client-Swift"
   s.module_name  = "SocketIO"
-  s.version      = "13.1.0"
+  s.version      = "13.1.1"
   s.summary      = "Socket.IO-client for iOS and OS X"
   s.description  = <<-DESC
                    Socket.IO-client for iOS and OS X.
@@ -18,7 +18,7 @@ Pod::Spec.new do |s|
   s.requires_arc = true
   s.source = {
     :git => "https://github.com/socketio/socket.io-client-swift.git",
-    :tag => 'v13.1.0',
+    :tag => 'v13.1.1',
     :submodules => true
   }
   s.pod_target_xcconfig = {
diff --git a/Source/SocketIO/Manager/SocketManager.swift b/Source/SocketIO/Manager/SocketManager.swift
index 624715c..21dd972 100644
--- a/Source/SocketIO/Manager/SocketManager.swift
+++ b/Source/SocketIO/Manager/SocketManager.swift
@@ -205,7 +205,7 @@ open class SocketManager : NSObject, SocketManagerSpec, SocketParsable, SocketDa
             return
         }
 
-        engine?.send("0\(socket.nsp)", withData: [])
+        engine?.send("0\(socket.nsp),", withData: [])
     }
 
     /// Called when the manager has disconnected from socket.io.