diff --git a/build-data/additional-spigot-member-mappings.csrg b/build-data/additional-spigot-member-mappings.csrg
index 962d83c9a..33f15ea1c 100644
--- a/build-data/additional-spigot-member-mappings.csrg
+++ b/build-data/additional-spigot-member-mappings.csrg
@@ -20,3 +20,8 @@ net/minecraft/world/entity/npc/EntityVillagerAbstract fD ()Lnet/minecraft/world/
 
 # BehaviorWorkComposter -> BehaviorWork
 net/minecraft/world/entity/ai/behavior/BehaviorWorkComposter a (Lnet/minecraft/server/level/WorldServer;Lnet/minecraft/world/entity/npc/EntityVillager;)V doWork
+
+# We add getLevel to the Hopper interface (implemented by Hoppers and Hopper Minecarts), but this also exists on BlockEntity,
+# which Hoppers also extend. We need to map the method we add to the Hopper interface to the same name used for the method on BlockEntity
+# to avoid remap causing issues
+net/minecraft/world/level/block/entity/IHopper getWorld ()Lnet/minecraft/world/level/World; getLevel
diff --git a/patches/server/0349-Optimize-Hoppers.patch b/patches/server/0349-Optimize-Hoppers.patch
index d68d9a035..1ec55ab1c 100644
--- a/patches/server/0349-Optimize-Hoppers.patch
+++ b/patches/server/0349-Optimize-Hoppers.patch
@@ -43,6 +43,24 @@ index f00839eab02277bf10b742c88fadc4aa9e89e7e0..312be2221e1acc44aaf6936533b0eb96
  
              this.profiler.push(() -> {
                  return worldserver + " " + worldserver.dimension().location();
+diff --git a/src/main/java/net/minecraft/world/entity/vehicle/MinecartHopper.java b/src/main/java/net/minecraft/world/entity/vehicle/MinecartHopper.java
+index 449d2e7b18608ca36282f1a29e69457fc525307e..c738cb0433ea4a86d82372bf66e29c01f991d2c6 100644
+--- a/src/main/java/net/minecraft/world/entity/vehicle/MinecartHopper.java
++++ b/src/main/java/net/minecraft/world/entity/vehicle/MinecartHopper.java
+@@ -68,6 +68,13 @@ public class MinecartHopper extends AbstractMinecartContainer implements Hopper
+         this.enabled = enabled;
+     }
+ 
++    // Paper start - add back getLevel
++    @Override
++    public net.minecraft.world.level.Level getLevel() {
++        return this.level;
++    }
++    // Paper end
++
+     @Override
+     public double getLevelX() {
+         return this.getX();
 diff --git a/src/main/java/net/minecraft/world/item/ItemStack.java b/src/main/java/net/minecraft/world/item/ItemStack.java
 index dd4deb08eb3ed15a156269a11d3d43abfd61fe5b..10f55ba189d12c46e0ef38b0b96a29894b4fba93 100644
 --- a/src/main/java/net/minecraft/world/item/ItemStack.java
@@ -84,14 +102,14 @@ index 8a079ee3ed243fd19b1dd7eed2de1dd33785faa1..c3a07ccccd5cc38552363c82398f432c
          }
  
 diff --git a/src/main/java/net/minecraft/world/level/block/entity/Hopper.java b/src/main/java/net/minecraft/world/level/block/entity/Hopper.java
-index a05acf709735b40ca86f978508c63a86065fd405..c1754df6a60ff93d75a28145b9dc4e9174241a21 100644
+index a05acf709735b40ca86f978508c63a86065fd405..71dd26ca6626631b94d53818cd06b93f61485369 100644
 --- a/src/main/java/net/minecraft/world/level/block/entity/Hopper.java
 +++ b/src/main/java/net/minecraft/world/level/block/entity/Hopper.java
 @@ -14,6 +14,10 @@ public interface Hopper extends Container {
          return SUCK;
      }
  
-+    net.minecraft.world.level.Level getLevel();
++    net.minecraft.world.level.Level getLevel(); // Paper
 +
 +    default net.minecraft.core.BlockPos getBlockPosition() { return new net.minecraft.core.BlockPos(getLevelX(), getLevelY(), getLevelZ()); } // Paper
 +