diff --git a/fabric-renderer-registries-v1/src/main/java/net/fabricmc/fabric/api/client/rendereregistry/v1/BlockEntityRendererRegistry.java b/fabric-renderer-registries-v1/src/main/java/net/fabricmc/fabric/api/client/rendereregistry/v1/BlockEntityRendererRegistry.java
index 0c8109e5e..dbcc2cc03 100644
--- a/fabric-renderer-registries-v1/src/main/java/net/fabricmc/fabric/api/client/rendereregistry/v1/BlockEntityRendererRegistry.java
+++ b/fabric-renderer-registries-v1/src/main/java/net/fabricmc/fabric/api/client/rendereregistry/v1/BlockEntityRendererRegistry.java
@@ -40,5 +40,5 @@ public interface BlockEntityRendererRegistry {
 	 *                            class is already loaded
 	 * @param <E> the {@link BlockEntity}
 	 */
-	<E extends BlockEntity> void register(BlockEntityType<E> blockEntityType, Function<BlockEntityRenderDispatcher, BlockEntityRenderer<E>> blockEntityRenderer);
+	<E extends BlockEntity> void register(BlockEntityType<E> blockEntityType, Function<BlockEntityRenderDispatcher, BlockEntityRenderer<? super E>> blockEntityRenderer);
 }
diff --git a/fabric-renderer-registries-v1/src/main/java/net/fabricmc/fabric/impl/client/renderer/registry/BlockEntityRendererRegistryImpl.java b/fabric-renderer-registries-v1/src/main/java/net/fabricmc/fabric/impl/client/renderer/registry/BlockEntityRendererRegistryImpl.java
index 092c24eb4..8aa81659a 100644
--- a/fabric-renderer-registries-v1/src/main/java/net/fabricmc/fabric/impl/client/renderer/registry/BlockEntityRendererRegistryImpl.java
+++ b/fabric-renderer-registries-v1/src/main/java/net/fabricmc/fabric/impl/client/renderer/registry/BlockEntityRendererRegistryImpl.java
@@ -32,7 +32,7 @@ public class BlockEntityRendererRegistryImpl implements BlockEntityRendererRegis
 	private static BiConsumer<BlockEntityType<?>, Function<BlockEntityRenderDispatcher, ? extends BlockEntityRenderer<?>>> handler = (type, function) -> map.put(type, function);
 
 	@Override
-	public <E extends BlockEntity> void register(BlockEntityType<E> blockEntityType, Function<BlockEntityRenderDispatcher, BlockEntityRenderer<E>> blockEntityRenderer) {
+	public <E extends BlockEntity> void register(BlockEntityType<E> blockEntityType, Function<BlockEntityRenderDispatcher, BlockEntityRenderer<? super E>> blockEntityRenderer) {
 		handler.accept(blockEntityType, blockEntityRenderer);
 	}