diff --git a/static/minecraft.json b/static/minecraft.json
index d30db4c..fc47f8b 100644
--- a/static/minecraft.json
+++ b/static/minecraft.json
@@ -327,21 +327,21 @@
         },
         "rd-160052": {
             "releaseTime": "2009-05-16T00:52:00+02:00",
-            "mainClass": "com.mojang.rubydung.RubyDung",
+            "mainClass": "com.mojang.minecraft.RubyDung",
             "+traits": ["no-texturepacks"]
         },
         "rd-20090515": {
-            "mainClass": "com.mojang.rubydung.RubyDung",
+            "mainClass": "com.mojang.minecraft.RubyDung",
             "+traits": ["no-texturepacks"]
         },
         "rd-132328": {
             "releaseTime": "2009-05-13T23:28:00+02:00",
-            "mainClass": "com.mojang.rubydung.RubyDung",
+            "mainClass": "com.mojang.minecraft.RubyDung",
             "+traits": ["no-texturepacks"]
         },
         "rd-132211": {
             "releaseTime": "2009-05-13T22:11:00+02:00",
-            "mainClass": "com.mojang.rubydung.RubyDung",
+            "mainClass": "com.mojang.minecraft.RubyDung",
             "+traits": ["no-texturepacks"]
         }
     }