diff --git a/src/main/java/appeng/core/api/definitions/ApiItems.java b/src/main/java/appeng/core/api/definitions/ApiItems.java
index b62f8a4e0..dc7890bf5 100644
--- a/src/main/java/appeng/core/api/definitions/ApiItems.java
+++ b/src/main/java/appeng/core/api/definitions/ApiItems.java
@@ -141,12 +141,12 @@ public final class ApiItems implements IItems {
     private final AEColoredItemDefinition coloredLumenPaintBall;
 
     // unsupported dev tools
-    private IItemDefinition toolEraser;
-    private IItemDefinition toolMeteoritePlacer;
-    private IItemDefinition toolDebugCard;
-    private IItemDefinition toolReplicatorCard;
+    private final IItemDefinition toolEraser;
+    private final IItemDefinition toolMeteoritePlacer;
+    private final IItemDefinition toolDebugCard;
+    private final IItemDefinition toolReplicatorCard;
 
-    private IItemDefinition dummyFluidItem;
+    private final IItemDefinition dummyFluidItem;
 
     public ApiItems(FeatureFactory registry, ApiMaterials materials) {
         FeatureFactory certusTools = registry.features(AEFeature.CERTUS_QUARTZ_TOOLS);
diff --git a/src/main/java/appeng/items/misc/CrystalSeedRendering.java b/src/main/java/appeng/items/misc/CrystalSeedRendering.java
index d053ee802..0978457af 100644
--- a/src/main/java/appeng/items/misc/CrystalSeedRendering.java
+++ b/src/main/java/appeng/items/misc/CrystalSeedRendering.java
@@ -1,12 +1,12 @@
 package appeng.items.misc;
 
+import net.fabricmc.api.EnvType;
+import net.fabricmc.api.Environment;
+import net.fabricmc.fabric.api.object.builder.v1.client.model.FabricModelPredicateProviderRegistry;
 import net.minecraft.item.Item;
-import net.minecraft.item.ItemModelsProperties;
-import net.minecraft.util.ResourceLocation;
-import net.minecraftforge.api.distmarker.Dist;
-import net.minecraftforge.api.distmarker.OnlyIn;
 
 import appeng.bootstrap.components.IClientSetupComponent;
+import appeng.core.AppEng;
 
 /**
  * Exposes a predicate "growth", which is used in the item model to
@@ -20,10 +20,10 @@ public class CrystalSeedRendering implements IClientSetupComponent {
     }
 
     @Override
-    @OnlyIn(Dist.CLIENT)
+    @Environment(EnvType.CLIENT)
     public void setup() {
         // Expose the growth of the seed to the model system
-        ItemModelsProperties.func_239418_a_(item, new ResourceLocation("appliedenergistics2:growth"),
+        FabricModelPredicateProviderRegistry.register(item, AppEng.makeId("growth"),
                 (is, w, p) -> CrystalSeedItem.getGrowthTicks(is) / (float) CrystalSeedItem.GROWTH_TICKS_REQUIRED);
     }
 }