diff --git a/package-lock.json b/package-lock.json
index 903ccf7..1ef4952 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -207,9 +207,9 @@
             "dev": true
         },
         "@types/node": {
-            "version": "16.4.6",
-            "resolved": "https://registry.npmjs.org/@types/node/-/node-16.4.6.tgz",
-            "integrity": "sha512-FKyawK3o5KL16AwbeFajen8G4K3mmqUrQsehn5wNKs8IzlKHE8TfnSmILXVMVziAEcnB23u1RCFU1NT6hSyr7Q==",
+            "version": "16.4.7",
+            "resolved": "https://registry.npmjs.org/@types/node/-/node-16.4.7.tgz",
+            "integrity": "sha512-aDDY54sst8sx47CWT6QQqIZp45yURq4dic0+HCYfYNcY5Ejlb/CLmFnRLfy3wQuYafOeh3lB/DAKaqRKBtcZmA==",
             "dev": true
         },
         "@types/parse-json": {
@@ -796,9 +796,9 @@
             "dev": true
         },
         "discord.js": {
-            "version": "13.0.0-dev.4f1f32f.1627517033",
-            "resolved": "https://registry.npmjs.org/discord.js/-/discord.js-13.0.0-dev.4f1f32f.1627517033.tgz",
-            "integrity": "sha512-gjsE4ENDf1OItxFqaB8YjZMc8pP5TpTMntwE9jOSlw8BXxsqxpb8+U8xfg+0Ew69p1y7TlAlfLmM85r4+lGKww==",
+            "version": "13.0.0-dev.2675b08.1627646567",
+            "resolved": "https://registry.npmjs.org/discord.js/-/discord.js-13.0.0-dev.2675b08.1627646567.tgz",
+            "integrity": "sha512-om6QhCwYwaW04Px5LZR9mRD7PEY/wPYrpGhMJFUFwPo8KwLKN2o66CGPb8PZ0uY1XZquEvUjFzVjzBZ//3WRPA==",
             "dev": true,
             "requires": {
                 "@discordjs/builders": "^0.2.0",
diff --git a/package.json b/package.json
index 7de5420..19c915c 100644
--- a/package.json
+++ b/package.json
@@ -34,11 +34,11 @@
     "devDependencies": {
         "@types/chai": "^4.2.21",
         "@types/mocha": "^9.0.0",
-        "@types/node": "^16.4.2",
+        "@types/node": "^16.4.7",
         "@typescript-eslint/eslint-plugin": "^4.28.4",
         "@typescript-eslint/parser": "^4.28.4",
         "chai": "^4.3.4",
-        "discord.js": "^13.0.0-dev.4f1f32f.1627517033",
+        "discord.js": "^13.0.0-dev.2675b08.1627646567",
         "eslint": "^7.31.0",
         "eslint-config-prettier": "^8.3.0",
         "eslint-plugin-prettier": "^3.4.0",
@@ -51,7 +51,7 @@
         "typescript": "^4.3.5"
     },
     "peerDependencies": {
-        "discord.js": "13.x"
+        "discord.js": "^13.0.0-dev"
     },
     "engines": {
         "node": ">=14.0.0"
diff --git a/src/SlashCommandManager.ts b/src/SlashCommandManager.ts
index dc0a66a..bf823f8 100644
--- a/src/SlashCommandManager.ts
+++ b/src/SlashCommandManager.ts
@@ -15,8 +15,8 @@ export class SlashCommandManager {
     }
 
     async execute(interaction: CommandInteraction): Promise<void> {
-        const handler = this.commands.get(interaction.commandName);
-        if (handler) handler.execute(interaction);
+        const command = this.commands.get(interaction.commandName);
+        if (command) command.execute(interaction);
     }
 
     static create(options?: SlashCommandManagerOptions): SlashCommandManager {
@@ -56,10 +56,10 @@ export class SlashCommandManager {
             }
         };
 
-        const commandHandlers = new Map<string, SlashCommand>();
+        const commands = new Map<string, SlashCommand>();
 
         for (const l1 of fs.readdirSync(commandFolder, { withFileTypes: true })) {
-            if (l1.isFile()) loadFile(commandFolder, l1.name, commandHandlers);
+            if (l1.isFile()) loadFile(commandFolder, l1.name, commands);
             else if (l1.isDirectory()) {
                 const folder1 = path.join(commandFolder, l1.name);
 
@@ -95,14 +95,14 @@ export class SlashCommandManager {
                     }
                 }
 
-                commandHandlers.set(
+                commands.set(
                     l1.name,
                     new GroupSlashCommand(l1.name, description, defaultPermission, subCommands, groups),
                 );
             }
         }
 
-        return new SlashCommandManager(commandHandlers);
+        return new SlashCommandManager(commands);
     }
 }
 
diff --git a/src/command/GroupSlashCommand.ts b/src/command/GroupSlashCommand.ts
index f3ed49c..f201005 100644
--- a/src/command/GroupSlashCommand.ts
+++ b/src/command/GroupSlashCommand.ts
@@ -22,8 +22,8 @@ export class GroupSlashCommand extends SlashCommand {
 
     /** @internal */
     async execute(interaction: CommandInteraction): Promise<void> {
-        const subCommandName = interaction.options.getSubCommand();
-        const groupName = interaction.options.getSubCommandGroup(false);
+        const subCommandName = interaction.options.getSubcommand();
+        const groupName = interaction.options.getSubcommandGroup(false);
 
         const executable =
             groupName !== null