diff --git a/g4f/Provider/Aivvm.py b/g4f/Provider/Aivvm.py
index 83495a22..3e4bbaeb 100644
--- a/g4f/Provider/Aivvm.py
+++ b/g4f/Provider/Aivvm.py
@@ -45,12 +45,12 @@ class Aivvm(AsyncGeneratorProvider):
             "temperature" : kwargs.get("temperature", 0.7)
         }
         headers = {
-            "Accept": "*/*",
+            "Accept": "text/event-stream",
             "Origin": cls.url,
             "Referer": f"{cls.url}/",
         }
         async with StreamSession(
-            impersonate="chrome107",
+            impersonate="chrome117",
             headers=headers,
             proxies={"https": proxy},
             timeout=timeout
@@ -73,4 +73,4 @@ class Aivvm(AsyncGeneratorProvider):
             ('temperature', 'float'),
         ]
         param = ', '.join([': '.join(p) for p in params])
-        return f'g4f.provider.{cls.__name__} supports: ({param})'
\ No newline at end of file
+        return f'g4f.provider.{cls.__name__} supports: ({param})'