diff --git a/xScience/xScience-4.2.ckan b/xScience/xScience-4.2.ckan
index a5726dd3db..807dc8f7d4 100644
--- a/xScience/xScience-4.2.ckan
+++ b/xScience/xScience-4.2.ckan
@@ -9,13 +9,13 @@
 	{
 		"homepage": "http://forum.kerbalspaceprogram.com/threads/96000"
 	},
-	"download": "http://themoose.co.uk/ksp/x-science-v4.3.zip",
+	"download": "http://themoose.co.uk/ksp/x-science-v4.2.zip",
 	"install": [
         {
             "file"       : "GameData/[x] Science!",
             "install_to" : "GameData"
         }
     	],
-	"version": "4.3",
-	"ksp_version_min": "1.0.2"
+	"version": "4.2",
+	"ksp_version_min": "1.0.1"
 }