diff --git a/gradle.properties b/gradle.properties
index 2611bda1..9ee5d9fe 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-pre2
-	yarn_mappings=1.16-pre2+build.29
+	minecraft_version=1.16-pre3
+	yarn_mappings=1.16-pre3+build.1
 	loader_version=0.8.7+build.201
 
 # Mod Properties
diff --git a/src/main/java/carpet/commands/PlayerCommand.java b/src/main/java/carpet/commands/PlayerCommand.java
index 454a93b6..feb59dea 100644
--- a/src/main/java/carpet/commands/PlayerCommand.java
+++ b/src/main/java/carpet/commands/PlayerCommand.java
@@ -237,7 +237,7 @@ public class PlayerCommand
                 source::getRotation
         );
         RegistryKey<World> dimType = tryGetArg(
-                () -> DimensionArgumentType.getDimensionArgument(context, "dimension"),
+                () -> DimensionArgumentType.getDimensionArgument(context, "dimension").getRegistryKey(),
                 () -> source.getWorld().getRegistryKey() // dimension.getType()
         );
         GameMode mode = GameMode.CREATIVE;
diff --git a/src/main/java/carpet/commands/SpawnCommand.java b/src/main/java/carpet/commands/SpawnCommand.java
index 7b5064df..46a80aea 100644
--- a/src/main/java/carpet/commands/SpawnCommand.java
+++ b/src/main/java/carpet/commands/SpawnCommand.java
@@ -17,6 +17,7 @@ import net.minecraft.entity.SpawnGroup;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.server.command.ServerCommandSource;
 import net.minecraft.server.network.ServerPlayerEntity;
+import net.minecraft.server.world.ServerWorld;
 import net.minecraft.util.DyeColor;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.registry.RegistryKey;
@@ -260,9 +261,9 @@ public class SpawnCommand
         return 1;
     }
 
-    private static int mobcapsForDimension(ServerCommandSource source, RegistryKey<World> dim)
+    private static int mobcapsForDimension(ServerCommandSource source, ServerWorld world)
     {
-        Messenger.send(source, SpawnReporter.printMobcapsForDimension(source.getMinecraftServer().getWorld(dim), true));
+        Messenger.send(source, SpawnReporter.printMobcapsForDimension(world, true));
         return 1;
     }
 
diff --git a/src/main/java/carpet/mixins/Entity_portalSuffocationMixin.java b/src/main/java/carpet/mixins/Entity_portalSuffocationMixin.java
index 0c787e2f..4f1676a0 100644
--- a/src/main/java/carpet/mixins/Entity_portalSuffocationMixin.java
+++ b/src/main/java/carpet/mixins/Entity_portalSuffocationMixin.java
@@ -2,10 +2,9 @@ package carpet.mixins;
 
 import carpet.CarpetSettings;
 import net.minecraft.entity.Entity;
+import net.minecraft.server.world.ServerWorld;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.Box;
-import net.minecraft.util.registry.RegistryKey;
-import net.minecraft.world.dimension.DimensionType;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
 import org.spongepowered.asm.mixin.injection.At;
@@ -22,7 +21,7 @@ public abstract class Entity_portalSuffocationMixin
             value = "INVOKE",
             target = "Lnet/minecraft/entity/Entity;getLastNetherPortalDirection()Lnet/minecraft/util/math/Direction;"
     ))
-    private void registerEntityDimensionChange(RegistryKey<DimensionType> newDimension, CallbackInfoReturnable<Entity> cir)
+    private void registerEntityDimensionChange(ServerWorld serverWorld, CallbackInfoReturnable<Entity> cir)
     {
         if (CarpetSettings.portalSuffocationFix)
         {
@@ -44,7 +43,7 @@ public abstract class Entity_portalSuffocationMixin
     }
 
     @Inject(method = "changeDimension", at = @At("RETURN"))
-    private void removeEntity(RegistryKey<DimensionType> newDimension, CallbackInfoReturnable<Entity> cir)
+    private void removeEntity(ServerWorld serverWorld, CallbackInfoReturnable<Entity> cir)
     {
         CarpetSettings.currentTelepotingEntityBox = null;
         CarpetSettings.fixedPosition = null;
diff --git a/src/main/java/carpet/mixins/ServerPlayerEntity_scarpetEventMixin.java b/src/main/java/carpet/mixins/ServerPlayerEntity_scarpetEventMixin.java
index 7e7c8cb2..d05cebaf 100644
--- a/src/main/java/carpet/mixins/ServerPlayerEntity_scarpetEventMixin.java
+++ b/src/main/java/carpet/mixins/ServerPlayerEntity_scarpetEventMixin.java
@@ -8,6 +8,7 @@ import net.minecraft.entity.damage.DamageSource;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.item.ItemStack;
 import net.minecraft.server.network.ServerPlayerEntity;
+import net.minecraft.server.world.ServerWorld;
 import net.minecraft.stat.Stat;
 import net.minecraft.util.Hand;
 import net.minecraft.util.math.BlockPos;
@@ -92,24 +93,24 @@ public abstract class ServerPlayerEntity_scarpetEventMixin extends PlayerEntity
     private RegistryKey<World> previousDimension;
 
     @Inject(method = "changeDimension", at = @At("HEAD"))
-    private void logPreviousCoordinates(RegistryKey<DimensionType> newDimension, CallbackInfoReturnable<Entity> cir)
+    private void logPreviousCoordinates(ServerWorld serverWorld, CallbackInfoReturnable<Entity> cir)
     {
         previousLocation = getPos();
         previousDimension = world.getRegistryKey();  //dimension type
     }
 
     @Inject(method = "changeDimension", at = @At("RETURN"))
-    private void atChangeDimension(RegistryKey<World> newDimension, CallbackInfoReturnable<Entity> cir)
+    private void atChangeDimension(ServerWorld newWorld, CallbackInfoReturnable<Entity> cir)
     {
         if (PLAYER_CHANGES_DIMENSION.isNeeded())
         {
             ServerPlayerEntity player = (ServerPlayerEntity) (Object)this;
             Vec3d to = null;
-            if (!notInAnyWorld || previousDimension != World.END || newDimension != World.OVERWORLD) // end ow
+            if (!notInAnyWorld || previousDimension != World.END || newWorld.getRegistryKey() != World.OVERWORLD) // end ow
             {
                 to = getPos();
             }
-            PLAYER_CHANGES_DIMENSION.onDimensionChange(player, previousLocation, to, previousDimension, newDimension);
+            PLAYER_CHANGES_DIMENSION.onDimensionChange(player, previousLocation, to, previousDimension, newWorld.getRegistryKey());
         }
     }