diff --git a/src/strands_tools/retrieve.py b/src/strands_tools/retrieve.py
index 9e3cb09d..9948fb5f 100644
--- a/src/strands_tools/retrieve.py
+++ b/src/strands_tools/retrieve.py
@@ -278,7 +278,10 @@ def retrieve(tool: ToolUse, **kwargs: Any) -> ToolResult:
             retrievalQuery={"text": query},
             knowledgeBaseId=kb_id,
             retrievalConfiguration={
-                "vectorSearchConfiguration": {"numberOfResults": number_of_results},
+                "vectorSearchConfiguration": {
+                    "numberOfResults": number_of_results,
+                    "overrideSearchType": "HYBRID"
+                },
             },
         )