21w19a

src/main/resources/carpet.accesswidener

@@ -2,4 +2,5 @@ accessWidener	v1	named
 
 accessible class net/minecraft/server/world/ThreadedAnvilChunkStorage$TicketManager
 accessible class net/minecraft/server/world/ServerLightingProvider$Stage
-accessible class net/minecraft/recipe/Ingredient$Entry
+accessible class net/minecraft/recipe/Ingredient$Entry
+accessible class net/minecraft/world/chunk/light/BlockLightStorage$Data

src/main/resources/carpet.mixins.json

@@ -2,7 +2,7 @@
   "required": true,
   "refmap": "fabric-carpet-refmap.json",
   "package": "carpet.mixins",
-  "compatibilityLevel": "JAVA_8",
+  "compatibilityLevel": "JAVA_16",
   "mixins": [
     "SpawnHelperInnerMixin",
     "CommandManagerMixin",

src/main/resources/fabric.mod.json

@@ -33,6 +33,7 @@
 
   "depends": {
     "minecraft": "1.17.x",
-    "fabricloader": ">=0.7.1"
+    "fabricloader": ">=0.11.3",
+    "java": ">=16"
   }
 }