diff --git a/tests/test_data_tree.py b/tests/test_data_tree.py
index 5adb68f1fd..10416d38c4 100644
--- a/tests/test_data_tree.py
+++ b/tests/test_data_tree.py
@@ -209,9 +209,7 @@ def test_write_to_file_remote_data_tree(tmpdir, server_clayer_remote_process):
         to_fill.list_double = [1.5, 2.5]
         to_fill.list_string = ["hello", "bye"]
     data_tree.write_to_txt(str(Path(tmpdir) / "file.txt"))
-    data_tree = dpf.DataTree.read_from_txt(
-        str(Path(tmpdir) / "file.txt"), server=server_connected
-    )
+    data_tree = dpf.DataTree.read_from_txt(str(Path(tmpdir) / "file.txt"), server=server_connected)
     assert data_tree.has("int")
     assert data_tree.has("double")
     assert data_tree.has("string")
diff --git a/tests/test_examples.py b/tests/test_examples.py
index b7989a0a0f..d5764adc91 100644
--- a/tests/test_examples.py
+++ b/tests/test_examples.py
@@ -22,7 +22,7 @@
 
 """Verify all examples can be accessed or downloaded"""
 
-import os.path
+from pathlib import Path
 
 import pytest
 
@@ -152,12 +152,12 @@ def test_find_examples(example, server_type_remote_process):
 
 
 def test_delete_downloaded_files():
-    path = examples.download_multi_stage_cyclic_result(return_local_path=True)
-    assert os.path.exists(path)
+    path = Path(examples.download_multi_stage_cyclic_result(return_local_path=True))
+    assert path.exists()
     examples.delete_downloads(verbose=False)
-    assert not os.path.exists(path)
-    path = examples.download_multi_stage_cyclic_result(return_local_path=True)
-    assert os.path.exists(path)
+    assert not path.exists()
+    path = Path(examples.download_multi_stage_cyclic_result(return_local_path=True))
+    assert path.exists()
 
 
 def test_get_example_required_minimum_dpf_version(tmp_path):
@@ -197,12 +197,12 @@ def test_get_example_required_minimum_dpf_version(tmp_path):
 
 
 def test_download_easy_statistics():
-    assert os.path.exists(examples.download_easy_statistics(return_local_path=True))
+    assert Path(examples.download_easy_statistics(return_local_path=True)).exists()
 
 
 def test_download_average_filter_plugin():
-    assert os.path.exists(examples.download_average_filter_plugin(return_local_path=True))
+    assert Path(examples.download_average_filter_plugin(return_local_path=True)).exists()
 
 
 def test_download_gltf_plugin():
-    assert os.path.exists(examples.download_gltf_plugin(return_local_path=True))
+    assert Path(examples.download_gltf_plugin(return_local_path=True)).exists()
diff --git a/tests/test_launcher.py b/tests/test_launcher.py
index 293d4f165d..be99ea4171 100644
--- a/tests/test_launcher.py
+++ b/tests/test_launcher.py
@@ -21,6 +21,7 @@
 # SOFTWARE.
 
 import os
+from pathlib import Path
 
 import pytest
 import psutil
@@ -192,10 +193,10 @@ def test_start_local_wrong_ansys_path(self, server_config):
     def test_launch_server_full_path(self, server_config):
         ansys_path = core.misc.get_ansys_path()
         if os.name == "nt":
-            path = os.path.join(ansys_path, "aisol", "bin", "winx64")
+            path = Path(ansys_path) / "aisol" / "bin" / "winx64"
         else:
             if server_config.protocol == core.server_factory.CommunicationProtocols.InProcess:
-                path = os.path.join(ansys_path, "aisol", "dll", "linx64")
+                path = Path(ansys_path) / "aisol" / "dll" / "linx64"
             elif (
                 server_config.protocol == core.server_factory.CommunicationProtocols.gRPC
                 and server_config.legacy is False
@@ -204,11 +205,13 @@ def test_launch_server_full_path(self, server_config):
                 # Ans.Dpf.Grpc.sh reside in two different folders
                 return
             else:
-                path = os.path.join(ansys_path, "aisol", "bin", "linx64")
+                path = Path(ansys_path) / "aisol" / "bin" / "linx64"
 
         # print("trying to launch on ", path)
         # print(os.listdir(path))
-        server = core.start_local_server(as_global=False, ansys_path=path, config=server_config)
+        server = core.start_local_server(
+            as_global=False, ansys_path=str(path), config=server_config
+        )
         assert "server_port" in server.info
 
 
@@ -219,7 +222,7 @@ def test_start_local_failed_executable(remote_config_server_type):
 
     with pytest.raises(FileNotFoundError):
         path = Path(get_ansys_path()).parent.absolute()
-        core.start_local_server(ansys_path=path, config=remote_config_server_type)
+        core.start_local_server(ansys_path=str(path), config=remote_config_server_type)
 
 
 @pytest.mark.skipif(not running_docker, reason="Checks docker start server")
diff --git a/tests/test_operator.py b/tests/test_operator.py
index 8cfadd185b..b583cf6e05 100644
--- a/tests/test_operator.py
+++ b/tests/test_operator.py
@@ -25,6 +25,7 @@
 import shutil
 import types
 import weakref
+from pathlib import Path
 
 import numpy as np
 import pytest
@@ -446,8 +447,8 @@ def find_mapdl():
     try:
         path = get_ansys_path()
         if dpf.core.SERVER.os == "nt":
-            exe = os.path.join(path, "ansys", "bin", "winx64", "ANSYS.exe")
-            return os.path.isfile(exe)
+            exe = Path(path).joinpath("ansys", "bin", "winx64", "ANSYS.exe")
+            return exe.is_file()
         else:
             return False
 
@@ -465,8 +466,8 @@ def test_inputs_outputs_datasources_operator(cyclic_ds, server_type):
     dsout = op.outputs.data_sources()
     assert dsout is not None
     assert dsout.result_key == "rst"
-    path = os.path.join(dsout.result_files[0])
-    shutil.rmtree(os.path.dirname(path))
+    path = Path(dsout.result_files[0])
+    shutil.rmtree(path.parent)
 
 
 def test_subresults_operator(cyclic_lin_rst, cyclic_ds):