diff --git a/package.json b/package.json
index e3b558d..88d4376 100644
--- a/package.json
+++ b/package.json
@@ -43,7 +43,7 @@
   },
   "dependencies": {
     "buffer-equal": "1.0.0",
-    "minecraft-data": "^0.19.1",
+    "minecraft-data": "^0.20.1",
     "prismarine-nbt": "0.2.0",
     "protodef": "0.3.0",
     "readable-stream": "^2.0.5",
diff --git a/src/version.js b/src/version.js
index 2a82160..3dcc94f 100644
--- a/src/version.js
+++ b/src/version.js
@@ -1,4 +1,4 @@
 module.exports={
   defaultVersion:'1.8',
-  supportedVersions:['1.8','1.9']
+  supportedVersions:['1.8','15w40b','1.9']
 };