diff --git a/python/python/bystro/api/cli.py b/python/python/bystro/api/cli.py
index 3c8c1b45d..b078a5060 100644
--- a/python/python/bystro/api/cli.py
+++ b/python/python/bystro/api/cli.py
@@ -1,8 +1,5 @@
-#!/usr/bin/env python3
-
 import argparse
 import json
-from multiprocessing import Value
 import os
 
 import requests
@@ -160,7 +157,7 @@ def get_jobs(args: argparse.Namespace, print_result=True):
         jobs["config"] = json.loads(jobs["config"])
 
     if print_result:
-        print(f"\nJob(s) fetched successfully: \n")
+        print("\nJob(s) fetched successfully: \n")
         print(json.dumps(jobs, indent=4))
         print("\n")
 
@@ -185,7 +182,7 @@ def create_job(args: argparse.Namespace, print_result=True):
         files.append(
             (
                 "file",
-                (os.path.basename(file), open(file, "rb"), "application/octet-stream"),
+                (os.path.basename(file), open(file, "rb"), "application/octet-stream"), # noqa: SIM115
             )
         )
 
@@ -196,11 +193,12 @@ def create_job(args: argparse.Namespace, print_result=True):
 
     if response.status_code != 200:
         raise RuntimeError(
-            f"Job creation failed with response status: {response.status_code}. Error: \n{response.text}\n"
+            f"Job creation failed with response status: {response.status_code}.\
+                Error: \n{response.text}\n"
         )
 
     if print_result:
-        print(f"\nJob creation successful:\n")
+        print("\nJob creation successful:\n")
         print(json.dumps(response.json(), indent=4))
         print("\n")
 
@@ -219,7 +217,8 @@ def get_user(args, print_result=True):
 
     if response.status_code != 200:
         raise RuntimeError(
-            f"Fetching profile failed with response status: {response.status_code}. Error: \n{response.text}\n"
+            f"Fetching profile failed with response status: {response.status_code}.\
+                Error: \n{response.text}\n"
         )
 
     if print_result:
diff --git a/python/python/bystro/api/tests/test_cli.py b/python/python/bystro/api/tests/test_cli.py
index 4cf0008f4..4a9ad5182 100644
--- a/python/python/bystro/api/tests/test_cli.py
+++ b/python/python/bystro/api/tests/test_cli.py
@@ -176,7 +176,7 @@ def test_get_job_list(mocker):
         ),
     )
     mocker.patch(
-        "requests.get", return_value=mocker.Mock(status_code=200, json=lambda: [])
+        "requests.get", return_value=mocker.Mock(status_code=200, json=lambda: []) # noqa: PIE807
     )
 
     args = SimpleNamespace(dir="./", type="completed", id=None)
diff --git a/python/requirements-dev.txt b/python/requirements-dev.txt
index ad72d66f7..691868af7 100644
--- a/python/requirements-dev.txt
+++ b/python/requirements-dev.txt
@@ -4,5 +4,7 @@ mypy==1.3.0
 pandas-stubs==2.0.2.230605
 pytest==7.3.1
 pytest-cov==4.1.0
+pytest-mock==3.11.1
 ruff==0.0.270
 types-tqdm==4.65.0.1
+types-requests==2.31.0.2
\ No newline at end of file