diff --git a/deevirt_schema/api/stats.py b/deevirt_schema/api/stats.py
index db89894..928ad58 100644
--- a/deevirt_schema/api/stats.py
+++ b/deevirt_schema/api/stats.py
@@ -14,4 +14,4 @@ class Stats(Stats):
     memory:Memory = Field()
     
 class MongoStats(Stats):
-    created_at: Optional[int] = Field(default=None, alias='created_at')
\ No newline at end of file
+    created_at: Optional[float] = Field(default=None, alias='created_at')
\ No newline at end of file