diff --git a/libs/langchain-openai/src/tests/azure/chat_models.test.ts b/libs/langchain-openai/src/tests/azure/chat_models.test.ts
index 84bfd726dd76..ee0e5bb55fe2 100644
--- a/libs/langchain-openai/src/tests/azure/chat_models.test.ts
+++ b/libs/langchain-openai/src/tests/azure/chat_models.test.ts
@@ -1,5 +1,9 @@
 import { AzureChatOpenAI } from "../../azure/chat_models.js";
 
+beforeEach(() => {
+  delete process.env.OPENAI_API_KEY;
+});
+
 test("Test Azure OpenAI serialization from azure endpoint", async () => {
   const chat = new AzureChatOpenAI({
     azureOpenAIEndpoint: "https://foobar.openai.azure.com/",
@@ -8,7 +12,7 @@ test("Test Azure OpenAI serialization from azure endpoint", async () => {
     azureOpenAIApiKey: "foo",
   });
   expect(JSON.stringify(chat)).toEqual(
-    `{"lc":1,"type":"constructor","id":["langchain","chat_models","azure_openai","AzureChatOpenAI"],"kwargs":{"azure_endpoint":"https://foobar.openai.azure.com/","openai_api_key":{"lc":1,"type":"secret","id":["OPENAI_API_KEY"]},"deployment_name":"gpt-4o"}}`
+    `{"lc":1,"type":"constructor","id":["langchain","chat_models","azure_openai","AzureChatOpenAI"],"kwargs":{"azure_endpoint":"https://foobar.openai.azure.com/","deployment_name":"gpt-4o","openai_api_version":"2024-08-01-preview","azure_open_ai_api_key":{"lc":1,"type":"secret","id":["AZURE_OPENAI_API_KEY"]}}}`
   );
 });
 
@@ -20,7 +24,7 @@ test("Test Azure OpenAI serialization from base path", async () => {
     azureOpenAIApiKey: "foo",
   });
   expect(JSON.stringify(chat)).toEqual(
-    `{"lc":1,"type":"constructor","id":["langchain","chat_models","azure_openai","AzureChatOpenAI"],"kwargs":{"openai_api_key":{"lc":1,"type":"secret","id":["OPENAI_API_KEY"]},"azure_endpoint":"https://foobar.openai.azure.com","deployment_name":"gpt-4o"}}`
+    `{"lc":1,"type":"constructor","id":["langchain","chat_models","azure_openai","AzureChatOpenAI"],"kwargs":{"openai_api_version":"2024-08-01-preview","azure_open_ai_api_key":{"lc":1,"type":"secret","id":["AZURE_OPENAI_API_KEY"]},"azure_endpoint":"https://foobar.openai.azure.com","deployment_name":"gpt-4o-mini"}}`
   );
 });
 
@@ -32,6 +36,6 @@ test("Test Azure OpenAI serialization from instance name", async () => {
     azureOpenAIApiKey: "foo",
   });
   expect(JSON.stringify(chat)).toEqual(
-    `{"lc":1,"type":"constructor","id":["langchain","chat_models","azure_openai","AzureChatOpenAI"],"kwargs":{"openai_api_key":{"lc":1,"type":"secret","id":["OPENAI_API_KEY"]},"azure_endpoint":"https://foobar.openai.azure.com/","deployment_name":"gpt-4o"}}`
+    `{"lc":1,"type":"constructor","id":["langchain","chat_models","azure_openai","AzureChatOpenAI"],"kwargs":{"azure_open_ai_api_instance_name":"foobar","deployment_name":"gpt-4o","openai_api_version":"2024-08-01-preview","azure_open_ai_api_key":{"lc":1,"type":"secret","id":["AZURE_OPENAI_API_KEY"]},"azure_endpoint":"https://foobar.openai.azure.com/"}}`
   );
 });
diff --git a/libs/langchain-openai/src/tests/chat_models.test.ts b/libs/langchain-openai/src/tests/chat_models.test.ts
index a24c180ff1d0..274c150845ef 100644
--- a/libs/langchain-openai/src/tests/chat_models.test.ts
+++ b/libs/langchain-openai/src/tests/chat_models.test.ts
@@ -194,6 +194,7 @@ describe("strict tool calling", () => {
       }),
       {
         strict: true,
+        method: "functionCalling",
       }
     );
 
@@ -238,7 +239,8 @@ describe("strict tool calling", () => {
     const modelWithTools = model.withStructuredOutput(
       z.object({
         location: z.string().describe("The location to get the weather for"),
-      })
+      }),
+      { method: "functionCalling" }
     );
 
     // This will fail since we're not returning a valid response in our mocked fetch function.