diff --git a/core/lib/opensearch.py b/core/lib/opensearch.py
index 40ded6b..f084dc2 100644
--- a/core/lib/opensearch.py
+++ b/core/lib/opensearch.py
@@ -54,6 +54,13 @@ def construct_query(query, fields, size):
                 "auto_generate_synonyms_phrase_query": True,
             }
         },
+        "sort": [
+            {
+                "ts": {
+                    "order": "desc",
+                }
+            }
+        ],
     }
     return query