diff --git a/Authorize.NET/Util/Constants.cs b/Authorize.NET/Util/Constants.cs
index 6286bea8..0daf447e 100644
--- a/Authorize.NET/Util/Constants.cs
+++ b/Authorize.NET/Util/Constants.cs
@@ -26,7 +26,7 @@ public static class Constants {
         public const int HttpConnectionDefaultTimeout = 30000;
         public const int HttpReadWriteDefaultTimeout = 30000;
 
-        public const string SDKVersion = "1.9.3";
+        public const string SDKVersion = "1.9.4";
 
     }
 #pragma warning restore 1591