diff --git a/forgeutil.py b/forgeutil.py
index e9a77ca..da63e5c 100644
--- a/forgeutil.py
+++ b/forgeutil.py
@@ -253,6 +253,7 @@ class ForgeInstallerProfileV2(JsonObject):
     data = DictProperty(DataSpec)
     processors = ListProperty(ProcessorSpec)
     libraries = ListProperty(MojangLibrary)
+    mirrorList = StringProperty(exclude_if_none=True, default=None)
 
 class InstallerInfo(JsonObject):
     sha1hash = StringProperty()