diff --git a/README.md b/README.md
index 9802678..64f8f59 100644
--- a/README.md
+++ b/README.md
@@ -110,6 +110,13 @@ Request a list of current live tournament games.
 This is the list you see in the client under Watch -> Live.
 Listen for the `matchList` event to get your response.
 
+### openContainer(containerid[, keyid])
+
+- `containerid` - The asset ID of the container.
+- `keyid` - The asset ID of the key, defaults to 0 if not provided as to unlock a keyless container.
+
+Opens a container. Listen for the `itemAcquired` event to get the item unboxed (if open was successful)
+
 ### requestRecentGames(steamid)
 
 Request a list of recent games (max. 8). This is the list you see in the client under Watch -> Your Matches.
diff --git a/index.js b/index.js
index 871e8de..4e93211 100644
--- a/index.js
+++ b/index.js
@@ -132,6 +132,13 @@ GlobalOffensive.prototype._connect = function() {
 	this._helloTimer = setTimeout(sendHello, 500);
 };
 
+GlobalOffensive.prototype.openContainer = function(containerID, keyID) {
+	var buf = new ByteBuffer(16, ByteBuffer.LITTLE_ENDIAN);
+	buf.writeUint64(keyID || 0);
+	buf.writeUint64(containerID);
+	this._send(Language.UnlockCrate, null, buf);
+};
+
 GlobalOffensive.prototype._send = function(type, protobuf, body) {
 	if (!this._steam.steamID) {
 		return false;