diff --git a/api/kiwi_vpn_api/config.py b/api/kiwi_vpn_api/config.py
index 31c3add..5a2b3d2 100644
--- a/api/kiwi_vpn_api/config.py
+++ b/api/kiwi_vpn_api/config.py
@@ -77,7 +77,7 @@ class JWTConfig(BaseModel):
     @classmethod
     def ensure_secret(cls, value: str | None) -> str:
         if value is None:
-            return token_hex(32)
+            return token_urlsafe(128)
 
         return value