diff --git a/src/main/java/net/minestom/server/instance/Chunk.java b/src/main/java/net/minestom/server/instance/Chunk.java
index 8b0777da1..127842b3c 100644
--- a/src/main/java/net/minestom/server/instance/Chunk.java
+++ b/src/main/java/net/minestom/server/instance/Chunk.java
@@ -391,7 +391,7 @@ public abstract class Chunk implements Viewable, Tickable, DataContainer {
         updateLightPacket.chunkX = getChunkX();
         updateLightPacket.chunkZ = getChunkZ();
 
-        final int sectionCount = 16 + 2; //todo
+        final int sectionCount = (getInstance().getDimensionType().getTotalHeight() / 16) + 2;
         final int maskLength = (int) Math.ceil((double) sectionCount / 64);
 
         updateLightPacket.skyLightMask = new long[maskLength];
diff --git a/src/main/java/net/minestom/server/world/DimensionType.java b/src/main/java/net/minestom/server/world/DimensionType.java
index 56e917ec3..91e738f4c 100644
--- a/src/main/java/net/minestom/server/world/DimensionType.java
+++ b/src/main/java/net/minestom/server/world/DimensionType.java
@@ -199,6 +199,14 @@ public class DimensionType {
         return this.piglinSafe;
     }
 
+    public int getMinY() {
+        return minY;
+    }
+
+    public int getHeight() {
+        return height;
+    }
+
     public int getLogicalHeight() {
         return this.logicalHeight;
     }
@@ -211,6 +219,10 @@ public class DimensionType {
         return this.infiniburn;
     }
 
+    public int getTotalHeight() {
+        return minY + height;
+    }
+
     @Override
     public boolean equals(Object o) {
         if (this == o) return true;