diff --git a/deevirt_schema/api/stats.py b/deevirt_schema/api/stats.py
index b30a1af..2df0cce 100644
--- a/deevirt_schema/api/stats.py
+++ b/deevirt_schema/api/stats.py
@@ -16,4 +16,4 @@ class Stats(Stats):
 class MongoStats(Stats):
     model_config = ConfigDict(arbitrary_types_allowed=True)
     
-    created_at: time = Field(default=time.time(), alias='created_at')
\ No newline at end of file
+    created_at: time = Field(default_factory=time.time(), alias='created_at')
\ No newline at end of file
diff --git a/setup.py b/setup.py
index c159315..4539386 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@ from setuptools import find_packages, setup
 
 setup(
     name='deevirt_schema',
-    version='0.1.17',    
+    version='0.1.18',    
     description='Deevirt Schema',
     url='https://git.celeonet.fr/Deevirt/deevirt_schema.git',
     author='Celeonet',