diff --git a/pack.mcmeta b/pack.mcmeta
index 87676d27b..8cd4afd8f 100644
--- a/pack.mcmeta
+++ b/pack.mcmeta
@@ -1,6 +1,9 @@
 {
   "pack": {
+    "pack_format": 63,
     "description": "The go-to 32x resource pack.\n§8December 2025 Release",
-    "pack_format": 64
+    "supported_formats": {
+      "min_inclusive": 63,
+      "max_inclusive": 64
+    }
   }
-}