diff --git a/osm_cli/cli/main.py b/osm_cli/cli/main.py
index fe08f418..8625b098 100644
--- a/osm_cli/cli/main.py
+++ b/osm_cli/cli/main.py
@@ -1,8 +1,9 @@
 import click
 import requests
 
-from osm_cli.logging.logger import logger
 from osm_cli.converters.pdf_converter import PDFConverter
+from osm_cli.logging.logger import logger
+
 
 @click.group()
 def osm():
@@ -25,17 +26,17 @@ def pdf_xml(file_path, file_id):
         converter = PDFConverter()
 
         if not converter.is_docker_running():
-            raise click.ClickException('Please make sure the docker is running')
+            raise click.ClickException("Please make sure the docker is running")
 
         if not converter.is_host_ready():
-            raise click.ClickException('The converter server is offline')
+            raise click.ClickException("The converter server is offline")
 
         xml_content = converter.convert(file_path)
         # Save the converted xml contents
-        output_file: str = f'docs/examples/sciencebeam_xml_outputs/{file_id}.xml'
-        with open(output_file, 'w', encoding='utf-8') as xml_file:
+        output_file: str = f"docs/examples/sciencebeam_xml_outputs/{file_id}.xml"
+        with open(output_file, "w", encoding="utf-8") as xml_file:
             xml_file.write(xml_content)
-            logger.info(f'Converted: {file_path} with ID: {file_id} to XML')
+            logger.info(f"Converted: {file_path} with ID: {file_id} to XML")
 
     except requests.RequestException as error:
         logger.error("Request error:", error)
diff --git a/osm_cli/converters/converter.py b/osm_cli/converters/converter.py
index 4bf98da7..c549f039 100644
--- a/osm_cli/converters/converter.py
+++ b/osm_cli/converters/converter.py
@@ -1,6 +1,6 @@
 from abc import ABC, abstractmethod
 
-from pydantic import FilePath, BaseModel
+from pydantic import BaseModel, FilePath
 
 
 class Converter(ABC, BaseModel):
diff --git a/osm_cli/converters/pdf_converter.py b/osm_cli/converters/pdf_converter.py
index 4bcabe70..ea7c009b 100644
--- a/osm_cli/converters/pdf_converter.py
+++ b/osm_cli/converters/pdf_converter.py
@@ -1,9 +1,9 @@
 import socket
 
 import docker
+import requests
 from docker.errors import DockerException
 from pydantic import FilePath
-import requests
 
 from osm_cli.converters.converter import Converter
 from osm_cli.utils.config import config
@@ -22,12 +22,11 @@ def convert(self, pdf_path: FilePath) -> str:
         Returns:
             XML content as a string
         """
-        sciencebeam_url: str = f'{self.protocol}://{self.host}:{self.port}/api/convert'
-        with open(pdf_path, 'rb') as pdf_file:
-            files = {'file': pdf_file}
-            headers = {'Accept': 'application/tei+xml'}
-            response = requests.post(
-                sciencebeam_url, files=files, headers=headers)
+        sciencebeam_url: str = f"{self.protocol}://{self.host}:{self.port}/api/convert"
+        with open(pdf_path, "rb") as pdf_file:
+            files = {"file": pdf_file}
+            headers = {"Accept": "application/tei+xml"}
+            response = requests.post(sciencebeam_url, files=files, headers=headers)
 
             if response.status_code == 200:
                 return response.text
@@ -56,7 +55,7 @@ def is_docker_running(self):
         """
         try:
             client = docker.from_env()
-            client.images.get('elifesciences/sciencebeam-parser')
+            client.images.get("elifesciences/sciencebeam-parser")
             return True
         except DockerException:
             return False
diff --git a/tests/test_file_processing.py b/tests/test_file_processing.py
index 98dc3af3..fa18dd8d 100644
--- a/tests/test_file_processing.py
+++ b/tests/test_file_processing.py
@@ -1,8 +1,8 @@
 import logging
+from pathlib import Path
 
 import pytest
 from click.testing import CliRunner
-from pathlib import Path
 
 from osm_cli.cli.main import pdf_xml
 
@@ -18,10 +18,9 @@ def sample_pdf(tmp_path):
 def test_pdf_converter(caplog, sample_pdf):
     caplog.set_level(logging.INFO)
     file_id = "test_file"
-    output_file = f'docs/examples/sciencebeam_xml_outputs/{file_id}.xml'
+    output_file = f"docs/examples/sciencebeam_xml_outputs/{file_id}.xml"
     runner = CliRunner()
     result = runner.invoke(pdf_xml, [str(sample_pdf), file_id])
     assert result.exit_code == 0
     assert f"Converted: {sample_pdf}" in caplog.text
     assert Path(output_file).exists()
-