diff --git a/source/general/manifest/manifest.3.json b/source/general/manifest/manifest.3.json
index aec16415..da27362e 100644
--- a/source/general/manifest/manifest.3.json
+++ b/source/general/manifest/manifest.3.json
@@ -11,6 +11,11 @@
       "type": "number",
       "description": "This defines the current version of the manifest. Don't change this unless you have a good reason to"
     },
+    "has_education_metadata": {
+      "title": "Has Education Metadata",
+      "type": "boolean",
+      "description": "Indicates whether this pack has education metadata."
+    },
     "capabilities": {
       "title": "Capabilities",
       "description": "These are the different features that the pack makes use of that aren't necessarily enabled by default.",
@@ -146,12 +151,22 @@
           "type": "string",
           "description": "This is the name of the pack as it appears within Minecraft. This is a required field."
         },
+        "pack_optimization_version": {
+          "title": "Pack Optimization Version",
+          "$ref": "../Version.json",
+          "description": "The version of the pack optimization system to use."
+        },
         "pack_scope": {
           "title": "Pack Scope",
           "type": "string",
           "description": "This is the scope of the pack. This is only for resource packs",
           "enum": [ "global", "world", "any" ]
         },
+        "platform_locked": {
+          "title": "Platform Locked",
+          "type": "boolean",
+          "description": "Indicates whether this pack is locked to a specific platform."
+        },
         "uuid": {
           "title": "UUID",
           "$ref": "../UUIDV4.json",
@@ -277,6 +292,13 @@
             "type": "number",
             "title": "Memory Tier",
             "description": "This creates a requirement on the capacity of memory needed to select the resolution. Each tier increases memory requirement by 256 MB."
+          },
+          "memory_performance_tier": {
+            "type": "integer",
+            "title": "Memory Performance Tier",
+            "description": "The performance tier for memory allocation. A value between 0 and 5 that indicates the required memory performance level for this subpack.",
+            "minimum": 0,
+            "maximum": 5
           }
         }
       }