diff --git a/bot/pleroma_service.py b/bot/pleroma_service.py
index 4ec3496..d7c52b6 100644
--- a/bot/pleroma_service.py
+++ b/bot/pleroma_service.py
@@ -159,67 +159,35 @@ class PleromaService(FediverseService):
     def upload_file(self, file_data: Union[BinaryIO, bytes], filename: Optional[str] = None) -> FediverseFile:
         """Upload a file to Pleroma instance"""
         try:
-            import requests
-            
-            # Convert file_data to bytes if it's a stream
+            # Convert file_data to bytes if it's a stream for MIME detection
             if hasattr(file_data, 'read'):
-                file_bytes = file_data.read()
+                # Check if we can seek back
+                try:
+                    current_pos = file_data.tell()
+                    header = file_data.read(8)
+                    file_data.seek(current_pos)
+                except (io.UnsupportedOperation, OSError):
+                    # Non-seekable stream, read all data
+                    remaining_data = file_data.read()
+                    file_bytes = header + remaining_data
+                    file_data = io.BytesIO(file_bytes)
+                    header = file_bytes[:8]
             else:
-                file_bytes = file_data
+                header = file_data[:8] if len(file_data) >= 8 else file_data
             
             # Determine mime type from file header
-            mime_type = 'image/jpeg'  # default
-            if file_bytes.startswith(b'\xff\xd8\xff'):
+            if header.startswith(b'\xff\xd8\xff'):
                 mime_type = 'image/jpeg'
-                ext = '.jpg'
-            elif file_bytes.startswith(b'\x89PNG\r\n\x1a\n'):
+            elif header.startswith(b'\x89PNG\r\n\x1a\n'):
                 mime_type = 'image/png'
-                ext = '.png'
-            elif file_bytes.startswith(b'GIF8'):
+            elif header.startswith(b'GIF8'):
                 mime_type = 'image/gif'
-                ext = '.gif'
-            elif file_bytes.startswith(b'RIFF') and b'WEBP' in file_bytes[:12]:
+            elif header.startswith(b'RIFF') and len(header) >= 8 and b'WEBP' in header:
                 mime_type = 'image/webp'
-                ext = '.webp'
             else:
-                ext = '.jpg'
+                mime_type = 'image/jpeg'  # Default fallback
             
-            # Create a filename if none provided
-            if not filename:
-                filename = f"upload{ext}"
-            
-            # Direct HTTP POST to /api/v1/media with headers matching browser behavior
-            headers = {
-                'Authorization': f'Bearer {self.client.access_token}',
-                'Accept': '*/*',
-                'Cache-Control': 'no-cache',
-                'Pragma': 'no-cache',
-                'User-Agent': 'Kemoverse-Bot/1.0'
-            }
-            
-            # Use files parameter to let requests handle multipart/form-data and content-type
-            files = {
-                'file': (filename, file_bytes, mime_type)
-            }
-            
-            url = f"{self.client.api_base_url}/api/v1/media"
-            
-            # Debug logging
-            print(f"DEBUG: Making POST request to: {url}")
-            print(f"DEBUG: Headers: {headers}")
-            print(f"DEBUG: Files keys: {list(files.keys())}")
-            
-            response = requests.post(url, headers=headers, files=files)
-            
-            print(f"DEBUG: Response status: {response.status_code}")
-            print(f"DEBUG: Response headers: {dict(response.headers)}")
-            print(f"DEBUG: Request method was: {response.request.method}")
-            
-            if response.status_code in (200, 201):
-                media = response.json()
-                return self._convert_mastodon_file(media)
-            else:
-                raise Exception(f"Upload failed with {response.status_code}: {response.text}")
-                        
+            media = self.client.media_post(file_data, mime_type=mime_type, description=filename)
+            return self._convert_mastodon_file(media)
         except Exception as e:
             raise RuntimeError(f"Failed to upload file to Pleroma: {e}") from e
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