diff --git a/requirements.txt b/requirements.txt
index 63a61b1..8efaa92 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,4 +4,4 @@ python-ms-core==0.0.23
 uvicorn==0.20.0
 html_testRunner==1.2.1
 geopandas==0.14.4
-python-osw-validation==0.3.2
+python-osw-validation==0.3.3
diff --git a/tests/unit_tests/test_validation.py b/tests/unit_tests/test_validation.py
index 19f3099..2238151 100644
--- a/tests/unit_tests/test_validation.py
+++ b/tests/unit_tests/test_validation.py
@@ -92,23 +92,23 @@ def test_validate_invalid_file_with_errors(self, mock_download_file, mock_clean_
         expected_errors = [
             {
                 'feature_index': 3,
-                'error_message': "Additional properties are not allowed ('crossing' was unexpected)"
+                'error_message': "Additional properties are not allowed ('crossing' was unexpected). If you want to carry this tag, change it to ext:crossing"
             },
             {
                 'feature_index': 6,
-                'error_message': "Additional properties are not allowed ('crossing' was unexpected)"
+                'error_message': "Additional properties are not allowed ('crossing' was unexpected). If you want to carry this tag, change it to ext:crossing"
             },
             {
                 'feature_index': 8,
-                'error_message': "Additional properties are not allowed ('crossing' was unexpected)"
+                'error_message': "Additional properties are not allowed ('crossing' was unexpected). If you want to carry this tag, change it to ext:crossing"
             },
             {
                 'feature_index': 25,
-                'error_message': "Additional properties are not allowed ('crossing' was unexpected)"
+                'error_message': "Additional properties are not allowed ('crossing' was unexpected). If you want to carry this tag, change it to ext:crossing"
             },
             {
                 'feature_index': 27,
-                'error_message': "Additional properties are not allowed ('crossing' was unexpected)"
+                'error_message': "Additional properties are not allowed ('crossing' was unexpected). If you want to carry this tag, change it to ext:crossing"
             }
         ]
         # Act