diff --git a/src/main/java/com/minelittlepony/unicopia/client/URenderers.java b/src/main/java/com/minelittlepony/unicopia/client/URenderers.java
index dad19f19..c09bbf8e 100644
--- a/src/main/java/com/minelittlepony/unicopia/client/URenderers.java
+++ b/src/main/java/com/minelittlepony/unicopia/client/URenderers.java
@@ -60,10 +60,10 @@ import net.minecraft.util.Identifier;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.BlockRenderView;
 
+@SuppressWarnings("deprecation")
 public interface URenderers {
     BlockEntity CHEST_RENDER_ENTITY = new CloudChestBlock.TileData(BlockPos.ORIGIN, UBlocks.CLOUD_CHEST.getDefaultState());
 
-    @SuppressWarnings("unchecked")
     static void bootstrap() {
         ParticleFactoryRegistry.getInstance().register(UParticles.UNICORN_MAGIC, createFactory(MagicParticle::new));
         ParticleFactoryRegistry.getInstance().register(UParticles.CHANGELING_MAGIC, createFactory(ChangelingMagicParticle::new));
diff --git a/src/main/java/com/minelittlepony/unicopia/client/render/AccessoryFeatureRenderer.java b/src/main/java/com/minelittlepony/unicopia/client/render/AccessoryFeatureRenderer.java
index 16261ff6..6b6cf861 100644
--- a/src/main/java/com/minelittlepony/unicopia/client/render/AccessoryFeatureRenderer.java
+++ b/src/main/java/com/minelittlepony/unicopia/client/render/AccessoryFeatureRenderer.java
@@ -14,6 +14,7 @@ import net.minecraft.client.model.ModelPart;
 import net.minecraft.client.render.VertexConsumerProvider;
 import net.minecraft.client.render.entity.feature.FeatureRenderer;
 import net.minecraft.client.render.entity.feature.FeatureRendererContext;
+import net.minecraft.client.render.entity.model.BipedEntityModel;
 import net.minecraft.client.render.entity.model.EntityModel;
 import net.minecraft.client.util.math.MatrixStack;
 import net.minecraft.entity.LivingEntity;
@@ -23,9 +24,10 @@ public class AccessoryFeatureRenderer<
         T extends LivingEntity,
         M extends EntityModel<T>> extends FeatureRenderer<T, M> {
 
-    private static final List<FeatureFactory<?>> REGISTRY = new ArrayList<>();
+    private static final List<FeatureFactory<?, ?>> REGISTRY = new ArrayList<>();
 
-    public static void register(FeatureFactory<?>...factories) {
+    @SafeVarargs
+    public static <T extends LivingEntity> void register(FeatureFactory<T, BipedEntityModel<T>>...factories) {
         for (var factory : factories) {
             REGISTRY.add(factory);
         }
@@ -36,7 +38,7 @@ public class AccessoryFeatureRenderer<
     @SuppressWarnings("unchecked")
     public AccessoryFeatureRenderer(FeatureRendererContext<T, M> context) {
         super(context);
-        features = REGISTRY.stream().map(f -> ((FeatureFactory<T>)f).create(context)).toList();
+        features = REGISTRY.stream().map(f -> ((FeatureFactory<T, M>)f).create(context)).toList();
     }
 
     @Override
@@ -68,8 +70,8 @@ public class AccessoryFeatureRenderer<
         return cancelled;
     }
 
-    public interface FeatureFactory<T extends LivingEntity> {
-        Feature<T> create(FeatureRendererContext<T, ? extends EntityModel<T>> context);
+    public interface FeatureFactory<T extends LivingEntity, M extends EntityModel<T>> {
+        Feature<T> create(FeatureRendererContext<T, M> context);
     }
 
     public interface Feature<T extends LivingEntity> {