diff --git a/unittests/test_validation.py b/unittests/test_validation.py
index 216b51fa06f09b93e12c6a28d0ce75e5093bd80e..a3215963f67b61241b321a0eb7345f9fe6fde1f2 100644
--- a/unittests/test_validation.py
+++ b/unittests/test_validation.py
@@ -23,16 +23,12 @@
 """
 test validation
 """
-import importlib
-import os
 from os.path import join
 from pathlib import Path
 
-import caoscrawler
 import jsonschema
 import linkahead as db
 import pytest
-import yaml
 from caoscrawler.validator import (convert_record,
                                    load_json_schema_from_datamodel_yaml,
                                    validate)