diff --git a/.codegen/_openapi_sha b/.codegen/_openapi_sha
index 2cd3357e2..3b0b1fdac 100644
--- a/.codegen/_openapi_sha
+++ b/.codegen/_openapi_sha
@@ -1 +1 @@
-f20747a9e1b158ea126960dcb30ac66f53435f2d
\ No newline at end of file
+d4c86c045ee9d0410a41ef07e8ae708673b95fa1
\ No newline at end of file
diff --git a/NEXT_CHANGELOG.md b/NEXT_CHANGELOG.md
index ac1055a9c..2de883356 100644
--- a/NEXT_CHANGELOG.md
+++ b/NEXT_CHANGELOG.md
@@ -5,6 +5,7 @@
 ### New Features and Improvements
 
 ### Bug Fixes
+* Fixed the deserialization of responses in VectorSearchAPI's `query_index()` method ([#961](https://github.com/databricks/databricks-sdk-py/pull/961)).
 
 ### Documentation
 
diff --git a/databricks/sdk/service/vectorsearch.py b/databricks/sdk/service/vectorsearch.py
index e40a64bf2..0f7e09d49 100755
--- a/databricks/sdk/service/vectorsearch.py
+++ b/databricks/sdk/service/vectorsearch.py
@@ -1165,7 +1165,7 @@ def from_dict(cls, d: Dict[str, Any]) -> QueryVectorIndexResponse:
 class ResultData:
     """Data returned in the query result."""
 
-    data_array: Optional[List[ListValue]] = None
+    data_array: Optional[List[List[str]]] = None
     """Data rows returned in the query."""
 
     row_count: Optional[int] = None
@@ -1175,7 +1175,7 @@ def as_dict(self) -> dict:
         """Serializes the ResultData into a dictionary suitable for use as a JSON request body."""
         body = {}
         if self.data_array:
-            body["data_array"] = [v.as_dict() for v in self.data_array]
+            body["data_array"] = [v for v in self.data_array]
         if self.row_count is not None:
             body["row_count"] = self.row_count
         return body
@@ -1192,7 +1192,7 @@ def as_shallow_dict(self) -> dict:
     @classmethod
     def from_dict(cls, d: Dict[str, Any]) -> ResultData:
         """Deserializes the ResultData from a dictionary."""
-        return cls(data_array=_repeated_dict(d, "data_array", ListValue), row_count=d.get("row_count", None))
+        return cls(data_array=d.get("data_array", None), row_count=d.get("row_count", None))
 
 
 @dataclass