diff --git a/common/appointment.py b/common/appointment.py
index 164fb67..2d5f7ad 100644
--- a/common/appointment.py
+++ b/common/appointment.py
@@ -1,4 +1,3 @@
-import json
 import struct
 from binascii import unhexlify
 
diff --git a/teos/responder.py b/teos/responder.py
index 9cbb21a..7f6dce9 100644
--- a/teos/responder.py
+++ b/teos/responder.py
@@ -1,4 +1,3 @@
-import json
 from queue import Queue
 from threading import Thread
 
diff --git a/test/common/unit/test_appointment.py b/test/common/unit/test_appointment.py
index 36488e7..d5738a4 100644
--- a/test/common/unit/test_appointment.py
+++ b/test/common/unit/test_appointment.py
@@ -1,4 +1,3 @@
-import json
 import struct
 import binascii
 from pytest import fixture
diff --git a/test/teos/unit/test_api.py b/test/teos/unit/test_api.py
index 1cfed89..f19fbc2 100644
--- a/test/teos/unit/test_api.py
+++ b/test/teos/unit/test_api.py
@@ -7,7 +7,6 @@ from teos import HOST, PORT
 import teos.errors as errors
 from teos.watcher import Watcher
 from teos.inspector import Inspector
-from teos.gatekeeper import Gatekeeper
 from teos.appointments_dbm import AppointmentsDBM
 from teos.responder import Responder, TransactionTracker
 
diff --git a/test/teos/unit/test_db_manager.py b/test/teos/unit/test_db_manager.py
index d4b275d..2ee337d 100644
--- a/test/teos/unit/test_db_manager.py
+++ b/test/teos/unit/test_db_manager.py
@@ -1,5 +1,4 @@
 import os
-import json
 import shutil
 import pytest
 
diff --git a/test/teos/unit/test_responder.py b/test/teos/unit/test_responder.py
index 0bec7cc..7c4d53d 100644
--- a/test/teos/unit/test_responder.py
+++ b/test/teos/unit/test_responder.py
@@ -1,4 +1,3 @@
-import json
 import pytest
 import random
 from uuid import uuid4