diff --git a/update.json b/update.json
new file mode 100644
index 0000000..8016828
--- /dev/null
+++ b/update.json
@@ -0,0 +1,10 @@
+{
+    "homepage": "https://github.com/Stephen-Seo/TurnBasedMinecraftMod",
+    "1.21.1": {
+        "1.26.0": "Ported to Forge 52.0.21, client config.\n  https://github.com/Stephen-Seo/TurnBasedMinecraftMod/blob/forge/Changelog.md"
+    },
+    "promos": {
+        "1.21.1-latest": "1.26.0",
+        "1.21.1-recommended": "1.26.0"
+    }
+}