diff --git a/base.py b/base.py
index e37097d..41147b2 100644
--- a/base.py
+++ b/base.py
@@ -1,6 +1,8 @@
 import base64
 import io
 import json
+import random
+
 import requests
 from requests.adapters import HTTPAdapter
 from urllib3.util.retry import Retry
@@ -131,6 +133,10 @@ class BaseImageNode:
             else:
                 payload["size"] = kwargs["image_size"]
 
+        if "seed" in kwargs:
+            if kwargs["seed"] == -1:
+                kwargs["seed"] = random.randint(1, 2147483647)
+
         # filter
         input_types = self.INPUT_TYPES()
         for key, settings in input_types["required"].items():
diff --git a/nodes.py b/nodes.py
index ecb6092..1adc96c 100644
--- a/nodes.py
+++ b/nodes.py
@@ -4,7 +4,7 @@ from .base import OpenAICompatibleNode, VolcengineNode
 class GeminiImage(OpenAICompatibleNode):
     SUPPORTED_MODELS = [
         "gemini-3-pro-image",
-        "gemini-3-pro-image-2k"
+        "gemini-3-pro-image-2k",
         "gemini-3-pro-image-4k",
         "gemini-2.5-flash-image",
     ]