diff --git a/pterodactyl/ptero.py b/pterodactyl/ptero.py
index f4f09c3..57dc7ea 100644
--- a/pterodactyl/ptero.py
+++ b/pterodactyl/ptero.py
@@ -233,7 +233,7 @@ class Pterodactyl(commands.Cog):
                         await asyncio.sleep(2)
                         continue
             for data in self.passed_info['updater_startup_vars']:
-                await session.put(self, url=await Pterodactyl.get_url(self, self.passed_info['guild'], "startup/variable"), headers=self.passed_info['headers'], data=data)
+                await session.put(self, url=await Pterodactyl.get_url(self, self.passed_info['guild'], "startup/variable"), headers=self.passed_info['headers'], json=data)
             await session.post(url=await Pterodactyl.get_url(self, self.passed_info['guild'], "power"), headers=self.passed_info['headers'], json={"signal": "start"})
             await self.passed_info['interaction'].edit_original_response(content="Updater started...")
             await asyncio.sleep(2)
@@ -247,7 +247,7 @@ class Pterodactyl(commands.Cog):
                         await asyncio.sleep(1)
                         continue
             for data in self.passed_info['old_startup_vars']:
-                await session.put(self, await Pterodactyl.get_url(self, self.passed_info['guild'], "startup/variable"), headers=self.passed_info['headers'], data=data)
+                await session.put(self, await Pterodactyl.get_url(self, self.passed_info['guild'], "startup/variable"), headers=self.passed_info['headers'], json=data)
             await asyncio.sleep(2)
             await session.post(url=await Pterodactyl.get_url(self, self.passed_info['guild'], "power"), headers=self.passed_info['headers'], json={"signal": "start"})
             await self.passed_info['interaction'].edit_original_response(content="Server starting...")