diff --git a/README.md b/README.md
index 96a3a32..8032717 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@ Parse and serialize minecraft packets, plus authentication and encryption.
 ## Features
 
  * Supports Minecraft PC version 1.7.10, 1.8.8, 1.9 (15w40b, 1.9, 1.9.1-pre2, 1.9.2, 1.9.4),
-  1.10 (16w20a, 1.10-pre1, 1.10, 1.10.1, 1.10.2), 1.11 (16w35a, 1.11, 1.11.2), and 1.12 (17w15a, 17w18b)
+  1.10 (16w20a, 1.10-pre1, 1.10, 1.10.1, 1.10.2), 1.11 (16w35a, 1.11, 1.11.2), and 1.12 (17w15a, 17w18b, 1.12-pre4, 1.12)
  * Parses all packets and emits events with packet fields as JavaScript
    objects.
  * Send a packet by supplying fields as a JavaScript object.
diff --git a/package.json b/package.json
index 5373678..676f8f3 100644
--- a/package.json
+++ b/package.json
@@ -41,7 +41,7 @@
     "endian-toggle": "^0.0.0",
     "lodash.get": "^4.1.2",
     "lodash.merge": "^4.3.0",
-    "minecraft-data": "^2.15.0",
+    "minecraft-data": "^2.17.0",
     "prismarine-nbt": "^1.0.0",
     "protodef": "^1.5.1",
     "readable-stream": "^2.0.5",
diff --git a/src/version.js b/src/version.js
index 71a0808..8a9e949 100644
--- a/src/version.js
+++ b/src/version.js
@@ -2,5 +2,5 @@
 
 module.exports={
   defaultVersion:'1.8',
-  supportedVersions:['1.7','1.8','1.9','1.10','1.11.2']
+  supportedVersions:['1.7','1.8','1.9','1.10','1.11.2','1.12']
 };