diff --git a/py/flux_dev.py b/py/flux_dev.py
index 1f7f7ca..b74eca5 100644
--- a/py/flux_dev.py
+++ b/py/flux_dev.py
@@ -97,7 +97,7 @@ class FluxDevNode:
     CATEGORY = "UCLOUD_MODELVERSE"
     FUNCTION = "execute"
 
-    def execute(self,
+    async def execute(self,
                 client,
                 prompt,
                 width=864,
@@ -129,7 +129,7 @@ class FluxDevNode:
         ))
             for i in range(num_requests)]
 
-        image_urls = asyncio.run(client.run_tasks(tasks))
+        image_urls = await client.run_tasks(tasks)
 
         output_images_list = []
         for image_url in image_urls:
diff --git a/py/flux_kontext_max.py b/py/flux_kontext_max.py
index 03c620c..029a290 100644
--- a/py/flux_kontext_max.py
+++ b/py/flux_kontext_max.py
@@ -59,7 +59,7 @@ class FluxKontextMaxNode:
     CATEGORY = "UCLOUD_MODELVERSE"
     FUNCTION = "execute"
 
-    def execute(self,
+    async def execute(self,
                 client,
                 prompt,
                 images,
@@ -100,7 +100,7 @@ class FluxKontextMaxNode:
             ))
                 for i in range(num_requests)]
 
-        image_urls = asyncio.run(client.run_tasks(tasks))
+        image_urls = await client.run_tasks(tasks)
 
         output_images_list = []
         for image_url in image_urls:
diff --git a/py/flux_kontext_max_t2i.py b/py/flux_kontext_max_t2i.py
index 138efcf..b6f4086 100644
--- a/py/flux_kontext_max_t2i.py
+++ b/py/flux_kontext_max_t2i.py
@@ -63,7 +63,7 @@ class FluxKontextMaxT2INode:
     CATEGORY = "UCLOUD_MODELVERSE"
     FUNCTION = "execute"
 
-    def execute(self,
+    async def execute(self,
                 client,
                 prompt,
                 num_images=1,
@@ -88,7 +88,7 @@ class FluxKontextMaxT2INode:
         ))
             for i in range(num_requests)]
 
-        image_urls = asyncio.run(client.run_tasks(tasks))
+        image_urls = await client.run_tasks(tasks)
 
         output_images_list = []
         for image_url in image_urls:
diff --git a/py/flux_kontext_pro.py b/py/flux_kontext_pro.py
index 179530d..b1f2b68 100644
--- a/py/flux_kontext_pro.py
+++ b/py/flux_kontext_pro.py
@@ -59,7 +59,7 @@ class FluxKontextProNode:
     CATEGORY = "UCLOUD_MODELVERSE"
     FUNCTION = "execute"
 
-    def execute(self,
+    async def execute(self,
                 client,
                 prompt,
                 images,
@@ -100,7 +100,7 @@ class FluxKontextProNode:
             ))
                 for i in range(num_requests)]
 
-        image_urls = asyncio.run(client.run_tasks(tasks))
+        image_urls = await client.run_tasks(tasks)
 
         output_images_list = []
         for image_url in image_urls:
diff --git a/py/flux_kontext_pro_t2i.py b/py/flux_kontext_pro_t2i.py
index d962eae..280ea70 100644
--- a/py/flux_kontext_pro_t2i.py
+++ b/py/flux_kontext_pro_t2i.py
@@ -63,7 +63,7 @@ class FluxKontextProT2INode:
     CATEGORY = "UCLOUD_MODELVERSE"
     FUNCTION = "execute"
 
-    def execute(self,
+    async def execute(self,
                 client,
                 prompt,
                 num_images=1,
@@ -88,7 +88,7 @@ class FluxKontextProT2INode:
         ))
             for i in range(num_requests)]
 
-        image_urls = asyncio.run(client.run_tasks(tasks))
+        image_urls = await client.run_tasks(tasks)
 
         output_images_list = []
         for image_url in image_urls:
diff --git a/py/step1x_edit.py b/py/step1x_edit.py
index 0d2feb0..a1dae80 100644
--- a/py/step1x_edit.py
+++ b/py/step1x_edit.py
@@ -60,7 +60,7 @@ class Step1xEditNode:
     CATEGORY = "UCLOUD_MODELVERSE"
     FUNCTION = "execute"
 
-    def execute(self,
+    async def execute(self,
                 client,
                 prompt,
                 image,
@@ -89,7 +89,7 @@ class Step1xEditNode:
         ))
             for i in range(num_requests)]
 
-        image_urls = asyncio.run(client.run_tasks(tasks))
+        image_urls = await client.run_tasks(tasks)
 
         output_images_list = []
         for image_url in image_urls:
diff --git a/requirements.txt b/requirements.txt
index fbce154..d6d2140 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
-requests >= 3.32.4
+requests >= 2.32.4
 pillow >= 11