diff --git a/src/steps/summarize-changes.ts b/src/steps/summarize-changes.ts
index 7a9a650..39c29e3 100644
--- a/src/steps/summarize-changes.ts
+++ b/src/steps/summarize-changes.ts
@@ -13,8 +13,7 @@ export async function summarizeChanges(
     Logger.log('summarizing changes')
     const openAiKey = core.getInput('openAIKey')
     const model = new OpenAI(
-      { temperature: 0 },
-      { apiKey: openAiKey }
+      { temperature: 0, openAIApiKey: openAiKey },
     )
     Logger.log('created model')
     const textSplitter = new RecursiveCharacterTextSplitter({