diff --git a/src/main/resources/appliedenergistics2.mixins.json b/src/main/resources/appliedenergistics2.mixins.json
index 471b58301..c13780acb 100644
--- a/src/main/resources/appliedenergistics2.mixins.json
+++ b/src/main/resources/appliedenergistics2.mixins.json
@@ -15,7 +15,8 @@
     "ThreadedAnvilChunkStorageAccessor",
     "GenerationSettingsAccessor",
     "BiomeAccessor",
-    "ServerWorldCustomItemEntityMixin"
+    "ServerWorldCustomItemEntityMixin",
+    "HopperMixin"
   ],
   "client": [
     "ModelsReloadMixin",