diff --git a/Rest.Net/MimeTypeExtensions.cs b/Rest.Net/MimeTypeExtensions.cs
index 082ef1e..1589087 100644
--- a/Rest.Net/MimeTypeExtensions.cs
+++ b/Rest.Net/MimeTypeExtensions.cs
@@ -223,6 +223,7 @@ namespace MontoyaTech.Rest.Net
                 case "jpeg": return "image/jpeg";
                 case "jpg": return "image/jpeg";
                 case "js": return "text/javascript";
+                case "json": return "application/json";
                 case "jsx": return "text/jscript";
                 case "jsxbin": return "text/plain";
                 case "latex": return "application/x-latex";