diff --git a/src/main/java/cn/kazusa/chatgpt/session/defaults/DefaultOpenAiSession.java b/src/main/java/cn/kazusa/chatgpt/session/defaults/DefaultOpenAiSession.java
index 159d503..ce1993f 100644
--- a/src/main/java/cn/kazusa/chatgpt/session/defaults/DefaultOpenAiSession.java
+++ b/src/main/java/cn/kazusa/chatgpt/session/defaults/DefaultOpenAiSession.java
@@ -201,7 +201,8 @@ public class DefaultOpenAiSession implements OpenAiSession {
 
     @Override
     public ImageResponse genImages(String prompt) {
-        ImageRequest imageRequest = ImageRequest.builder().prompt(prompt).build();
+        ImageRequest imageRequest = ImageRequest.builder()
+                .model(ImageRequest.Model.DALL_E_3.getCode()).prompt(prompt).build();
         return this.genImages(imageRequest);
     }