diff --git a/.github/workflows/tox-tests.yml b/.github/workflows/tox-tests.yml
index 0e652942b..571435d2a 100644
--- a/.github/workflows/tox-tests.yml
+++ b/.github/workflows/tox-tests.yml
@@ -68,9 +68,10 @@ jobs:
         run: python3 -m tox run -e ${{ matrix.tox-testenv }}
 
   unit-tests:
-    runs-on: ubuntu-20.04
+    runs-on: ${{ matrix.os }}
     strategy:
       matrix:
+        os: ["ubuntu-20.04", "windows-2022"]
         python-version: ["3.9", "3.10"]
         tox-testenv:
           - "clean,py39-pytest-cov,report"
@@ -91,6 +92,7 @@ jobs:
       - uses: actions/checkout@v3
 
       - name: install English words dictionary
+        if: ${{ contains(matrix.os, 'ubuntu') }}
         run: sudo apt install -y wamerican
 
       - name: setup python ${{ matrix.python-version }}
@@ -106,6 +108,7 @@ jobs:
       - name: get pip cache dir
         id: pip-cache
         run: echo "dir=$(pip cache dir)" >> $GITHUB_OUTPUT
+        shell: bash
 
       - name: cache dependencies
         uses: actions/cache@v3.3.1
diff --git a/src/dioptra/restapi/task_plugin/service.py b/src/dioptra/restapi/task_plugin/service.py
index e49455925..1bd0969ea 100644
--- a/src/dioptra/restapi/task_plugin/service.py
+++ b/src/dioptra/restapi/task_plugin/service.py
@@ -78,7 +78,7 @@ def create(
             plugin_uri_list: Optional[List[str]] = self._s3_service.upload_directory(
                 directory=tmpdir,
                 bucket=bucket,
-                prefix=str(prefix),
+                prefix=prefix.as_posix(),
                 include_suffixes=[".py"],
                 log=log,
             )
@@ -114,7 +114,11 @@ def delete(
             return []
 
         prefix: Path = Path(collection) / task_plugin_name
-        self._s3_service.delete_prefix(bucket=bucket, prefix=str(prefix), log=log)
+        self._s3_service.delete_prefix(
+            bucket=bucket,
+            prefix=prefix.as_posix(),
+            log=log,
+        )
 
         log.info(
             "TaskPlugin deleted",
@@ -175,7 +179,7 @@ def get_by_name_in_collection(
             task_plugin_name=task_plugin_name,
         )
 
-        prefix = Path(collection) / task_plugin_name
+        prefix: Path = Path(collection) / task_plugin_name
         modules: List[str] = self._s3_service.list_objects(
             bucket=bucket,
             prefix=self._s3_service.normalize_prefix(str(prefix), log=log),
diff --git a/tests/unit/task_plugins/dioptra_builtins/artifacts/test_mlflow.py b/tests/unit/task_plugins/dioptra_builtins/artifacts/test_mlflow.py
index 709ffee57..e613e3431 100644
--- a/tests/unit/task_plugins/dioptra_builtins/artifacts/test_mlflow.py
+++ b/tests/unit/task_plugins/dioptra_builtins/artifacts/test_mlflow.py
@@ -16,7 +16,6 @@
 # https://creativecommons.org/licenses/by/4.0/legalcode
 from __future__ import annotations
 
-import os
 import uuid
 from copy import deepcopy
 from pathlib import Path
@@ -48,7 +47,7 @@ def download_artifacts(
     ) -> str:
         if dst_path is None:
             dst_path = "tmp_unit_test"
-        dst_path = os.path.abspath(dst_path)
+        dst_path = str(Path(dst_path).absolute())
         dst_local_path = dst_path
         return dst_local_path
 
@@ -73,7 +72,7 @@ def create_run(self, experiment_id, start_time=56020, tags=None, run_name=None):
         if not run_name_tag:
             tags.append(RunTag(key=MLFLOW_RUN_NAME, value=run_name))
         run_uuid = uuid.uuid4().hex
-        artifact_uri = os.path.join("/path/to/artifacts/", run_uuid, "artifacts")
+        artifact_uri = Path("/path/to/artifacts/") / run_uuid / "artifacts"
 
         run_info = RunInfo(
             run_uuid=run_uuid,
@@ -157,7 +156,7 @@ def test_download_all_artifacts_in_run(
 
     dst_path = download_all_artifacts_in_run(run_id, artifact_path, destination_path)
     assert isinstance(dst_path, str)
-    assert destination_path == os.path.relpath(dst_path)
+    assert Path(destination_path) == Path(dst_path).relative_to(Path.cwd())
 
 
 @pytest.mark.parametrize(
@@ -199,10 +198,8 @@ def test_upload_data_frame_artifact(
 
     upload_data_frame_artifact(data_frame, file_name, file_format, None, working_dir)
 
-    pwd = "." if working_dir is None else working_dir
-    assert os.path.isfile(
-        Path(os.path.abspath(pwd)) / Path(file_name).with_suffix("." + output)
-    )
+    pwd = Path("." if working_dir is None else working_dir).absolute()
+    assert (pwd / Path(file_name).with_suffix("." + output)).is_file()
 
 
 @pytest.mark.parametrize(
@@ -235,8 +232,8 @@ def test_upload_directory_as_tarball_artifact(
     upload_directory_as_tarball_artifact(
         source_dir, tarball_filename, tarball_write_mode, working_dir
     )
-    pwd = "." if working_dir is None else working_dir
-    assert os.path.isfile(Path(os.path.abspath(pwd)) / Path(tarball_filename))
+    pwd = Path("." if working_dir is None else working_dir).absolute()
+    assert (pwd / tarball_filename).is_file()
 
 
 @pytest.mark.parametrize(