diff --git a/src/main/java/ru/windcorp/progressia/common/util/MultiLOC.java b/src/main/java/ru/windcorp/progressia/common/util/MultiLOC.java
new file mode 100644
index 0000000..b9e67d9
--- /dev/null
+++ b/src/main/java/ru/windcorp/progressia/common/util/MultiLOC.java
@@ -0,0 +1,25 @@
+package ru.windcorp.progressia.common.util;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.function.Supplier;
+
+public class MultiLOC {
+	
+	private final Map<Class<?>, LowOverheadCache<?>> caches = new HashMap<>();
+	
+	public <T> MultiLOC addClass(Class<T> clazz, Supplier<T> generator) {
+		caches.put(clazz, new LowOverheadCache<>(generator));
+		return this;
+	}
+	
+	public <T> T grab(Class<T> clazz) {
+		return clazz.cast(caches.get(clazz).grab());
+	}
+	
+	@SuppressWarnings("unchecked")
+	public void release(Object obj) {
+		((LowOverheadCache<Object>) caches.get(obj.getClass())).release(obj);
+	}
+
+}
diff --git a/src/main/java/ru/windcorp/progressia/server/world/ImplementedChangeTracker.java b/src/main/java/ru/windcorp/progressia/server/world/ImplementedChangeTracker.java
index c681e01..3cb6a8b 100644
--- a/src/main/java/ru/windcorp/progressia/server/world/ImplementedChangeTracker.java
+++ b/src/main/java/ru/windcorp/progressia/server/world/ImplementedChangeTracker.java
@@ -53,7 +53,7 @@ public class ImplementedChangeTracker implements Changer {
 			Vec3i blockInChunk = Vectors.grab3i();
 			Coordinates.convertInWorldToInChunk(position, blockInChunk);
 
-			world.getChunkByBlock(position).setBlock(blockInChunk, block);
+			world.getChunkByBlock(position).setBlock(blockInChunk, block, true);
 
 			Vectors.release(blockInChunk);
 		}
diff --git a/src/main/java/ru/windcorp/progressia/server/world/block/UpdateableBlock.java b/src/main/java/ru/windcorp/progressia/server/world/block/UpdateableBlock.java
index b76f6da..406f4c9 100644
--- a/src/main/java/ru/windcorp/progressia/server/world/block/UpdateableBlock.java
+++ b/src/main/java/ru/windcorp/progressia/server/world/block/UpdateableBlock.java
@@ -2,7 +2,7 @@ package ru.windcorp.progressia.server.world.block;
 
 import ru.windcorp.progressia.server.world.Changer;
 
-public interface UpdatableBlock {
+public interface UpdateableBlock {
 	
 	void update(BlockTickContext context, Changer changer);