diff --git a/langchain/src/chains/index.ts b/langchain/src/chains/index.ts
index 8693a7461994..f831197ea966 100644
--- a/langchain/src/chains/index.ts
+++ b/langchain/src/chains/index.ts
@@ -1,6 +1,6 @@
 export { BaseChain, ChainInputs } from "./base.js";
 export { LLMChain, LLMChainInput } from "./llm_chain.js";
-export { APIChain, APIChainInput } from "./api/api_chain.js";
+export { APIChain, APIChainInput, APIChainOptions } from "./api/api_chain.js";
 export { ConversationChain } from "./conversation.js";
 export {
   SequentialChain,