--- a/net/minecraft/server/TagsServer.java
+++ b/net/minecraft/server/TagsServer.java
@@ -11,6 +11,7 @@
 public class TagsServer<T> extends Tags<T> {
 
     private final IRegistry<T> a;
+    public int version; // CraftBukkit
 
     public TagsServer(IRegistry<T> iregistry, String s, String s1) {
         super(iregistry::c, iregistry::get, s, false, s1);
@@ -31,7 +32,7 @@
             while (iterator1.hasNext()) {
                 Object object = iterator1.next();
 
-                packetdataserializer.d(this.a.a(object));
+                packetdataserializer.d(this.a.a((T) object)); // CraftBukkit - decompile error
             }
         }
 
@@ -49,7 +50,7 @@
                 arraylist.add(this.a.fromId(packetdataserializer.g()));
             }
 
-            this.c().put(minecraftkey, Tag.a.a().a((Collection) arraylist).b(minecraftkey));
+            this.c().put(minecraftkey, (Tag<T>) Tag.a.a().a((Collection) arraylist).b(minecraftkey)); // CraftBukkit - decompile error
         }
 
     }