diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index 8319d3e..2c30819 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -1,6 +1,5 @@
 {
   "name": "Minecraft Fabric + Datapack Dev",
-  "image": "mcr.microsoft.com/devcontainers/java:1-25-bookworm",
 
   "features": {
     "ghcr.io/devcontainers/features/java:1": {
diff --git a/datapack/RTWrapper-Datapack/data/runtoolkit/advancement/packs/rtwrapper.json b/datapack/RTWrapper-Datapack/data/runtoolkit/advancement/packs/rtwrapper.json
new file mode 100644
index 0000000..ca089e1
--- /dev/null
+++ b/datapack/RTWrapper-Datapack/data/runtoolkit/advancement/packs/rtwrapper.json
@@ -0,0 +1,37 @@
+{
+  "parent": "runtoolkit:root",
+  "display": {
+    "icon": {
+      "id": "minecraft:command_block"
+    },
+    "title": {
+      "text": "RTWrapper",
+      "color": "aqua",
+      "bold": true
+    },
+    "description": [
+      {
+        "text": "Loaded: ",
+        "color": "gray"
+      },
+      {
+        "text": "RTWrapper 1.0.0+26.2",
+        "color": "green"
+      },
+      {
+        "text": "Macro command wrapper API for Runtoolkit datapacks.",
+        "color": "dark_gray"
+      }
+    ],
+    "frame": "task",
+    "show_toast": false,
+    "announce_to_chat": false,
+    "hidden": false
+  },
+  "criteria": {
+    "loaded": {
+      "trigger": "minecraft:tick"
+    }
+  },
+  "sends_telemetry_event": false
+}
\ No newline at end of file
diff --git a/datapack/RTWrapper-Datapack/data/runtoolkit/advancement/root.json b/datapack/RTWrapper-Datapack/data/runtoolkit/advancement/root.json
new file mode 100644
index 0000000..ec49edc
--- /dev/null
+++ b/datapack/RTWrapper-Datapack/data/runtoolkit/advancement/root.json
@@ -0,0 +1,27 @@
+{
+  "display": {
+    "icon": {
+      "id": "minecraft:knowledge_book"
+    },
+    "title": {
+      "text": "Runtoolkit",
+      "color": "gold",
+      "bold": true
+    },
+    "description": {
+      "text": "Loaded Runtoolkit datapacks/modules",
+      "color": "yellow"
+    },
+    "background": "minecraft:block/deepslate_tiles",
+    "frame": "task",
+    "show_toast": false,
+    "announce_to_chat": false,
+    "hidden": false
+  },
+  "criteria": {
+    "loaded": {
+      "trigger": "minecraft:tick"
+    }
+  },
+  "sends_telemetry_event": false
+}
\ No newline at end of file
diff --git a/scripts/generate_wrappers.py b/scripts/generate_wrappers.py
index a75ebd1..b816428 100644
--- a/scripts/generate_wrappers.py
+++ b/scripts/generate_wrappers.py
@@ -28,7 +28,7 @@
 HANDLER_DIR = PACK / "data" / "rtwrapper" / "function" / "core" / "wrappers" / "handler"
 
 TARGET = "Java Edition 26.2"
-PACK_FORMAT = 104
+PACK_FORMAT = 107
 
 # Java Edition 26.2 normal commands and aliases.
 COMMANDS = [
diff --git a/scripts/validate_datapack.py b/scripts/validate_datapack.py
index 27c7d4f..d2c1862 100644
--- a/scripts/validate_datapack.py
+++ b/scripts/validate_datapack.py
@@ -44,7 +44,7 @@ def main() -> None:
         load_json(path)
 
     pack_mcmeta = load_json(PACK / 'pack.mcmeta')
-    if pack_mcmeta.get('pack', {}).get('pack_format') != 1097:
+    if pack_mcmeta.get('pack', {}).get('pack_format') != 107:
         fail('pack.mcmeta pack_format must be 107 for the 26.2 target')
 
     required_tag_values = {
@@ -145,8 +145,8 @@ def main() -> None:
             if ADV_REVOKE_RE.search(line):
                 fail(f'advancement revoke is not allowed for loaded-pack registry at {rel}:{i}')
 
-    print(f'[validateDatapack] OK: {len(expected)} wrappers, {variant_count} named variants, runtoolkit advancements use minecraft:tick, pack_format=104')
+    print(f'[validateDatapack] OK: {len(expected)} wrappers, {variant_count} named variants, runtoolkit advancements use minecraft:tick, pack_format=107')
 
 
 if __name__ == '__main__':
-    main()
+    main()
\ No newline at end of file