diff --git a/tests/unit/test_opensearch.py b/tests/unit/test_opensearch.py
index fdc2be13b..0dfad09b2 100644
--- a/tests/unit/test_opensearch.py
+++ b/tests/unit/test_opensearch.py
@@ -462,6 +462,11 @@ def test_index_csv_local(client):
     file_path = f"{tempfile.gettempdir()}/inspections.csv"
     index = f"test_index_csv_local_{_get_unique_suffix()}"
     try:
+        wr.opensearch.create_index(
+            client=client,
+            index=index,
+            mappings={"properties": {"business_phone_number": {"type": "text"}}},
+        )
         df = pd.DataFrame(inspections_documents)
         df.to_csv(file_path, index=False)
         response = wr.opensearch.index_csv(client, path=file_path, index=index)
@@ -474,6 +479,11 @@ def test_index_csv_s3(client, path):
     file_path = f"{tempfile.gettempdir()}/inspections.csv"
     index = f"test_index_csv_s3_{_get_unique_suffix()}"
     try:
+        wr.opensearch.create_index(
+            client=client,
+            index=index,
+            mappings={"properties": {"business_phone_number": {"type": "text"}}},
+        )
         df = pd.DataFrame(inspections_documents)
         df.to_csv(file_path, index=False)
         s3 = boto3.client("s3")