diff --git a/gradle.properties b/gradle.properties
index d4a20396..f1a7d909 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -4,8 +4,8 @@ org.gradle.jvmargs=-Xmx1G
 # Fabric Properties
 	# check these on https://fabricmc.net/use
     # or better: https://modmuss50.me/fabric.html
-	minecraft_version=1.16-pre1
-	yarn_mappings=1.16-pre1+build.1
+	minecraft_version=1.16-pre2
+	yarn_mappings=1.16-pre2+build.1
 	loader_version=0.8.7+build.201
 
 # Mod Properties
diff --git a/src/main/java/carpet/mixins/CommandManagerMixin.java b/src/main/java/carpet/mixins/CommandManagerMixin.java
index 94842611..c2677cbf 100644
--- a/src/main/java/carpet/mixins/CommandManagerMixin.java
+++ b/src/main/java/carpet/mixins/CommandManagerMixin.java
@@ -25,7 +25,7 @@ public abstract class CommandManagerMixin
     private CommandDispatcher<ServerCommandSource> dispatcher;
 
     @Inject(method = "<init>", at = @At("RETURN"))
-    private void onRegister(CommandManager.class_5364 arg, CallbackInfo ci) {
+    private void onRegister(CommandManager.RegistrationEnvironment arg, CallbackInfo ci) {
         CarpetServer.registerCarpetCommands(this.dispatcher);
     }
 
diff --git a/src/main/java/carpet/script/CarpetExpression.java b/src/main/java/carpet/script/CarpetExpression.java
index 25f435ef..38a63113 100644
--- a/src/main/java/carpet/script/CarpetExpression.java
+++ b/src/main/java/carpet/script/CarpetExpression.java
@@ -1332,21 +1332,21 @@ public class CarpetExpression
             if (radius < 1 || radius > 32) throw new InternalExpressionException("Ticket radius should be between 1 and 32 chunks");
             // due to types we will wing it:
             ChunkPos target = new ChunkPos(pos);
-            if (ticket == ChunkTicketType.PORTAL)
-                cc.s.getWorld().getChunkManager().addTicket(ChunkTicketType.PORTAL, target, radius, pos);
-            else if (ticket == ChunkTicketType.POST_TELEPORT)
-                cc.s.getWorld().getChunkManager().addTicket(ChunkTicketType.POST_TELEPORT, target, radius, 1);
+            if (ticket == ChunkTicketType.field_19280) // portal
+                cc.s.getWorld().getChunkManager().addTicket(ChunkTicketType.field_19280, target, radius, pos);
+            else if (ticket == ChunkTicketType.field_19347) // post teleport
+                cc.s.getWorld().getChunkManager().addTicket(ChunkTicketType.field_19347, target, radius, 1);
             else
-                cc.s.getWorld().getChunkManager().addTicket(ChunkTicketType.UNKNOWN, target, radius, target);
+                cc.s.getWorld().getChunkManager().addTicket(ChunkTicketType.field_14032, target, radius, target);
             Value ret = new NumericValue(ticket.getExpiryTicks());
             return (_c, _t) -> ret;
         });
 
     }
     private Map<String, ChunkTicketType<?>> ticketTypes = new HashMap<String, ChunkTicketType<?>>(){{
-        put("portal", ChunkTicketType.PORTAL);
-        put("teleport", ChunkTicketType.POST_TELEPORT);
-        put("unknown", ChunkTicketType.UNKNOWN);
+        put("portal", ChunkTicketType.field_19280);
+        put("teleport", ChunkTicketType.field_19347);
+        put("unknown", ChunkTicketType.field_14032);  // unknown
     }};
 
     private static String getScoreboardKeyFromValue(Value keyValue)