diff --git a/pterodactyl/ptero.py b/pterodactyl/ptero.py
index f73221a..f4f09c3 100644
--- a/pterodactyl/ptero.py
+++ b/pterodactyl/ptero.py
@@ -105,7 +105,7 @@ class Pterodactyl(commands.Cog):
         ]
         if response_dict['attributes']['current_state'] == "offline":
             for data in updater_startup_vars:
-                await session.put(await self.get_url(interaction.guild, "startup/variable"), headers=headers, data=data)
+                await session.put(await self.get_url(interaction.guild, "startup/variable"), headers=headers, json=data)
             await session.post(await self.get_url(interaction.guild, "power"), headers=headers, json={"signal": "start"})
             await interaction_message.edit(content="Updater started...")
             await asyncio.sleep(1)
@@ -119,7 +119,7 @@ class Pterodactyl(commands.Cog):
                         await asyncio.sleep(1)
                         continue
             for data in old_startup_vars:
-                await session.put(await self.get_url(interaction.guild, "startup/variable"), headers=headers, data=data)
+                await session.put(await self.get_url(interaction.guild, "startup/variable"), headers=headers, json=data)
             await interaction_message.edit(content="Updater finished.\nUpdate process completed!")
         elif response_dict['attributes']['current_state'] == "running" or response_dict['attributes']['current_state'] == "starting":
             passed_info = {