diff --git a/server/graph_service/dto/retrieve.py b/server/graph_service/dto/retrieve.py
index 1e7513ae..b75c48c9 100644
--- a/server/graph_service/dto/retrieve.py
+++ b/server/graph_service/dto/retrieve.py
@@ -6,7 +6,9 @@
 
 
 class SearchQuery(BaseModel):
-    group_ids: list[str] = Field(description='The group ids for the memories to search')
+    group_ids: list[str] | None = Field(
+        None, description='The group ids for the memories to search'
+    )
     query: str
     max_facts: int = Field(default=10, description='The maximum number of facts to retrieve')