diff --git a/src/main/java/dev/cammiescorner/arcanus/common/blocks/entities/DisplayCaseBlockEntity.java b/src/main/java/dev/cammiescorner/arcanus/common/blocks/entities/DisplayCaseBlockEntity.java
index a616eb8..d8eddb5 100644
--- a/src/main/java/dev/cammiescorner/arcanus/common/blocks/entities/DisplayCaseBlockEntity.java
+++ b/src/main/java/dev/cammiescorner/arcanus/common/blocks/entities/DisplayCaseBlockEntity.java
@@ -68,7 +68,9 @@ public void clear() {
 
 	public void notifyListeners() {
 		this.markDirty();
-		world.updateListeners(getPos(), getCachedState(), getCachedState(), Block.NOTIFY_ALL);
+
+		if(world != null)
+			world.updateListeners(getPos(), getCachedState(), getCachedState(), Block.NOTIFY_ALL);
 	}
 
 	@Override
diff --git a/src/main/java/dev/cammiescorner/arcanus/common/blocks/entities/FillableBookshelfBlockEntity.java b/src/main/java/dev/cammiescorner/arcanus/common/blocks/entities/FillableBookshelfBlockEntity.java
index 176ad39..318f976 100644
--- a/src/main/java/dev/cammiescorner/arcanus/common/blocks/entities/FillableBookshelfBlockEntity.java
+++ b/src/main/java/dev/cammiescorner/arcanus/common/blocks/entities/FillableBookshelfBlockEntity.java
@@ -75,9 +75,12 @@ public void clear() {
 
 	public void notifyListeners() {
 		this.markDirty();
-		BlockState oldState = getCachedState();
-		world.setBlockState(getPos(), world.getBlockState(getPos()).with(FillableBookshelfBlock.BOOK_COUNT, fullSlots()));
-		world.updateListeners(getPos(), oldState, getCachedState(), Block.NOTIFY_ALL);
+
+		if(world != null) {
+			BlockState oldState = getCachedState();
+			world.setBlockState(getPos(), world.getBlockState(getPos()).with(FillableBookshelfBlock.BOOK_COUNT, fullSlots()));
+			world.updateListeners(getPos(), oldState, getCachedState(), Block.NOTIFY_ALL);
+		}
 	}
 
 	public int fullSlots() {
diff --git a/src/main/resources/fabric.mod.json b/src/main/resources/fabric.mod.json
index cb7f539..2dbfc5c 100644
--- a/src/main/resources/fabric.mod.json
+++ b/src/main/resources/fabric.mod.json
@@ -30,7 +30,7 @@
 	],
 	"accessWidener": "META-INF/arcanus.accesswidener",
 	"depends": {
-		"fabricloader": ">=0.12.0-",
+		"fabricloader": ">=0.11.0-",
 		"fabric": "*",
 		"minecraft": "1.17.x",
 		"cloth-config2": ">=5.0.38",