diff --git a/gemini_nodes.py b/gemini_nodes.py
index f26e33e..3c55a2d 100644
--- a/gemini_nodes.py
+++ b/gemini_nodes.py
@@ -117,7 +117,7 @@ class SSL_GeminiAPIKeyConfig(IO.ComfyNode):
                 IO.String.Input("google_application_credentials", default="", optional=True, multiline=False, tooltip="Optional absolute path to an application default credentials JSON file for Vertex AI."),
                 IO.Boolean.Input("use_cache", default=False, optional=True, tooltip="Reuse unchanged Gemini input context through the API cache after a local result-cache miss."),
                 IO.Int.Input("cache_ttl_minutes", default=60, min=1, step=1, optional=True, tooltip="How long Gemini keeps explicitly cached context."),
-                IO.Int.Input("cache_seed", default=0, min=0, max=2147483647, optional=True, tooltip="Gemini generation seed used when context caching is enabled."),
+                IO.Int.Input("cache_seed", default=0, min=0, max=2147483647, control_after_generate=True, optional=True, tooltip="Gemini generation seed used when context caching is enabled."),
             ],
             outputs=[
                 cls.GemConfig.Output("config")
diff --git a/tests/test_gemini_nodes.py b/tests/test_gemini_nodes.py
index 68e506b..8ec580a 100644
--- a/tests/test_gemini_nodes.py
+++ b/tests/test_gemini_nodes.py
@@ -11,6 +11,15 @@ from PIL import Image
 from custom_nodes.ComfyUI_Gemini_Expanded_API import gemini_nodes
 
 
+def test_cache_seed_explicitly_enables_seed_widget_control():
+    inputs = gemini_nodes.SSL_GeminiAPIKeyConfig.INPUT_TYPES()
+    kind, options = inputs["optional"]["cache_seed"]
+    assert kind == "INT"
+    assert options["control_after_generate"] is True
+    assert options["min"] == 0
+    assert options["max"] == 2147483647
+
+
 def _execute_kwargs(config):
     return {
         "config": config,