diff --git a/tests/api_client_test.py b/tests/api_client_test.py
index 61c74cc939039dda668e30d35e39d9f1d5274b16..70d0ba8ec92b078eb0fe5ed1fcff1d67a9866573 100644
--- a/tests/api_client_test.py
+++ b/tests/api_client_test.py
@@ -11,7 +11,9 @@ def test_get_client(mock_clients):
     app = create_app()
     with patch(
         "builtins.open", mock_open(read_data=json.dumps(mock_clients))
-    ) as mock_file_open, app.test_client() as app_test_client:
+    ) as mock_file_open, patch(
+        "os.path.getmtime", return_value=3
+    ) as mock_getmtime, app.test_client() as app_test_client:
         response = app_test_client.get("/client")
         assert response.status_code == 200
         assert len(response.json.keys()) == 2
@@ -23,7 +25,9 @@ def test_get_client_1(mock_clients):
     app = create_app()
     with patch(
         "builtins.open", mock_open(read_data=json.dumps(mock_clients))
-    ) as mock_file_open, app.test_client() as app_test_client:
+    ) as mock_file_open, patch(
+        "os.path.getmtime", return_value=3
+    ) as mock_getmtime, app.test_client() as app_test_client:
         response = app_test_client.get("/client/client-1")
         assert response.status_code == 200
         assert "client_id" in response.json
@@ -37,7 +41,9 @@ def test_post_client(mock_clients, mock_new_client):
     app = create_app()
     with patch(
         "builtins.open", mock_open(read_data=json.dumps(mock_clients))
-    ) as mock_file_open, app.test_client() as app_test_client:
+    ) as mock_file_open, patch(
+        "os.path.getmtime", return_value=3
+    ) as mock_getmtime, app.test_client() as app_test_client:
         response = app_test_client.post("/client", json=mock_new_client)
         assert response.status_code == 201
         assert "client_id" in response.json
@@ -51,7 +57,9 @@ def test_put_client_1(mock_clients):
     app = create_app()
     with patch(
         "builtins.open", mock_open(read_data=json.dumps(mock_clients))
-    ) as mock_file_open, app.test_client() as app_test_client:
+    ) as mock_file_open, patch(
+        "os.path.getmtime", return_value=3
+    ) as mock_getmtime, app.test_client() as app_test_client:
         response = app_test_client.get("/client/client-1")
         client_1 = response.json
         print(client_1)
@@ -71,6 +79,8 @@ def test_delete_client_1(mock_clients):
     app = create_app()
     with patch(
         "builtins.open", mock_open(read_data=json.dumps(mock_clients))
-    ) as mock_file_open, app.test_client() as app_test_client:
+    ) as mock_file_open, patch(
+        "os.path.getmtime", return_value=3
+    ) as mock_getmtime, app.test_client() as app_test_client:
         response = app_test_client.delete("/client/client-1")
         assert response.status_code == 204
diff --git a/tests/models/client_model_test.py b/tests/models/client_model_test.py
index 4748509cd7b5ae0698242ef65da074e181f4871f..bc01f933e08c348468042c7bb5cc000f87d993a3 100644
--- a/tests/models/client_model_test.py
+++ b/tests/models/client_model_test.py
@@ -11,7 +11,7 @@ def test_init_with_clients(mock_clients):
     # File is read on __init__
     with patch(
         "builtins.open", mock_open(read_data=json.dumps(mock_clients))
-    ) as mock_file_open:
+    ) as mock_file_open, patch("os.path.getmtime", return_value=3) as mock_getmtime:
         clients_file = ClientModel()
         assert len(clients_file.clients.keys()) == 2
         assert "client-1" in clients_file.clients.keys()
@@ -19,7 +19,9 @@ def test_init_with_clients(mock_clients):
 
 def test_init_no_clients_file():
     # Handles FileNotFound on __init__
-    with patch("builtins.open", side_effect=FileNotFoundError()) as mock_file_open:
+    with patch(
+        "builtins.open", side_effect=FileNotFoundError()
+    ) as mock_file_open, patch("os.path.getmtime", return_value=3) as mock_getmtime:
         clients_file = ClientModel()
         assert len(clients_file.clients.keys()) == 0
         assert "client-1" not in clients_file.clients.keys()
@@ -52,7 +54,7 @@ def test_get_modified(mock_clients):
 def test_find_existing(mock_clients):
     with patch(
         "builtins.open", mock_open(read_data=json.dumps(mock_clients))
-    ) as mock_file_open:
+    ) as mock_file_open, patch("os.path.getmtime", return_value=3) as mock_getmtime:
         clients_file = ClientModel()
         client = clients_file.find("client-1")
         assert client is not None
@@ -63,7 +65,7 @@ def test_find_existing(mock_clients):
 def test_find_nonexisting(mock_clients):
     with patch(
         "builtins.open", mock_open(read_data=json.dumps(mock_clients))
-    ) as mock_file_open:
+    ) as mock_file_open, patch("os.path.getmtime", return_value=3) as mock_getmtime:
         clients_file = ClientModel()
         client = clients_file.find("client-3")
         assert client is None
@@ -73,7 +75,7 @@ def test_find_nonexisting(mock_clients):
 def test_add(mock_clients, mock_new_client):
     with patch(
         "builtins.open", mock_open(read_data=json.dumps(mock_clients))
-    ) as mock_file_open:
+    ) as mock_file_open, patch("os.path.getmtime", return_value=3) as mock_getmtime:
         clients_file = ClientModel()
         client = clients_file.add(mock_new_client)
         assert client["client_id"] in clients_file.clients
@@ -84,7 +86,7 @@ def test_add(mock_clients, mock_new_client):
 def test_remove(mock_clients):
     with patch(
         "builtins.open", mock_open(read_data=json.dumps(mock_clients))
-    ) as mock_file_open:
+    ) as mock_file_open, patch("os.path.getmtime", return_value=3) as mock_getmtime:
         clients_file = ClientModel()
         client = clients_file.find("client-2")
         clients_file.remove(client)
@@ -96,7 +98,7 @@ def test_remove(mock_clients):
 def test_update(mock_clients):
     with patch(
         "builtins.open", mock_open(read_data=json.dumps(mock_clients))
-    ) as mock_file_open:
+    ) as mock_file_open, patch("os.path.getmtime", return_value=3) as mock_getmtime:
         clients_file = ClientModel()
         client = clients_file.find("client-1")
         assert client["subscription"] == "soar.#"
@@ -111,7 +113,7 @@ def test_update(mock_clients):
 def test_save(mock_clients):
     with patch(
         "builtins.open", mock_open(read_data=json.dumps(mock_clients))
-    ) as mock_file_open:
+    ) as mock_file_open, patch("os.path.getmtime", return_value=3) as mock_getmtime:
         clients_file = ClientModel()
         mock_file_open.assert_any_call("./data/clients.json", "r")
         clients_file.save()
@@ -123,7 +125,7 @@ def test_save(mock_clients):
 def test_secret(mock_clients):
     with patch(
         "builtins.open", mock_open(read_data=json.dumps(mock_clients))
-    ) as mock_file_open:
+    ) as mock_file_open, patch("os.path.getmtime", return_value=3) as mock_getmtime:
         secret_pattern = "^[A-Za-z0-9]+$"
         clients_file = ClientModel()
         secret = clients_file.secret()