diff --git a/src/main/java/WayofTime/bloodmagic/tile/TileAltar.java b/src/main/java/WayofTime/bloodmagic/tile/TileAltar.java
index 073e0b5f..e16be76e 100644
--- a/src/main/java/WayofTime/bloodmagic/tile/TileAltar.java
+++ b/src/main/java/WayofTime/bloodmagic/tile/TileAltar.java
@@ -16,13 +16,13 @@ import com.google.common.base.Strings;
 import net.minecraft.block.state.IBlockState;
 import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.NBTTagCompound;
-import net.minecraft.server.gui.IUpdatePlayerListBox;
 import net.minecraft.util.BlockPos;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.EnumParticleTypes;
+import net.minecraft.util.ITickable;
 import net.minecraftforge.fluids.*;
 
-public class TileAltar extends TileInventory implements IBloodAltar, IUpdatePlayerListBox, IFluidTank, IFluidHandler {
+public class TileAltar extends TileInventory implements IBloodAltar, ITickable, IFluidTank, IFluidHandler {
 
     public boolean isActive;
     protected FluidStack fluidOutput = new FluidStack(BlockLifeEssence.getLifeEssence(), 0);
diff --git a/src/main/java/WayofTime/bloodmagic/tile/TileMasterRitualStone.java b/src/main/java/WayofTime/bloodmagic/tile/TileMasterRitualStone.java
index 407db6f2..941420a7 100644
--- a/src/main/java/WayofTime/bloodmagic/tile/TileMasterRitualStone.java
+++ b/src/main/java/WayofTime/bloodmagic/tile/TileMasterRitualStone.java
@@ -17,17 +17,17 @@ import lombok.NoArgsConstructor;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.NBTTagCompound;
-import net.minecraft.server.gui.IUpdatePlayerListBox;
 import net.minecraft.tileentity.TileEntity;
 import net.minecraft.util.BlockPos;
 import net.minecraft.util.EnumFacing;
+import net.minecraft.util.ITickable;
 import net.minecraft.world.World;
 import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.fml.common.eventhandler.Event;
 
 @Getter
 @NoArgsConstructor
-public class TileMasterRitualStone extends TileEntity implements IMasterRitualStone, IUpdatePlayerListBox {
+public class TileMasterRitualStone extends TileEntity implements IMasterRitualStone, ITickable {
 
     public static final int REFRESH_TIME = 0;