diff --git a/packages/cli/src/commands/knowledge/retrieve.ts b/packages/cli/src/commands/knowledge/retrieve.ts
index 6b5cd0d..beefe55 100644
--- a/packages/cli/src/commands/knowledge/retrieve.ts
+++ b/packages/cli/src/commands/knowledge/retrieve.ts
@@ -220,7 +220,7 @@ async function runWithAkSk(
     };
     if (flags.rerankMode) rerank.RerankMode = flags.rerankMode as string;
     if (flags.rerankInstruct) rerank.RerankInstruct = flags.rerankInstruct as string;
-    body.Rerank = rerank;
+    body.Rerank = [rerank];
   }
 
   const pathname = `/${workspaceId}/index/retrieve`;
diff --git a/packages/core/src/types/api.ts b/packages/core/src/types/api.ts
index 19aebff..87f0782 100644
--- a/packages/core/src/types/api.ts
+++ b/packages/core/src/types/api.ts
@@ -363,11 +363,11 @@ export interface KnowledgeRetrieveRequest {
   EnableRewrite?: boolean;
   RerankTopN?: number;
   TopK?: number;
-  Rerank?: {
+  Rerank?: Array<{
     ModelName?: string;
     RerankMode?: string;
     RerankInstruct?: string;
-  };
+  }>;
   RerankTopN_legacy?: number;
   SearchFilters?: Array<{
     Key: string;