diff --git a/scripts/minecraft.js b/scripts/minecraft.js
index a448c49..b578d7d 100644
--- a/scripts/minecraft.js
+++ b/scripts/minecraft.js
@@ -22,9 +22,9 @@ const messageTypes = {
     EVENT: 3
 };
 
-const chatMessageRegex = /^\[(?:.*?)\]: \<(?<username>.*)\> (?<message>.*)/;
-const joinNotificationRegex = /^\[(?:.*?)\]: (?<username>.*) joined the game/;
-const leaveNotificationRegex = /^\[(?:.*?)\]: (?<username>.*) left the game/;
+const chatMessageRegex = /^\[(?:.*?)\]: \<(?<username>[a-zA-Z0-9]+)\> (?<message>.*)/;
+const joinNotificationRegex = /^\[(?:.*?)\]: (?<username>[a-zA-Z0-9]+) joined the game/;
+const leaveNotificationRegex = /^\[(?:.*?)\]: (?<username>[a-zA-Z0-9]+) left the game/;
 const rconConnection = new Rcon("localhost", "25575", process.env.RCON_PASSWORD);
 
 export default class GatewayClient {