diff --git a/data_diff/dbt_config_validators.py b/data_diff/dbt_config_validators.py
index 5258a0ca..e7c548a4 100644
--- a/data_diff/dbt_config_validators.py
+++ b/data_diff/dbt_config_validators.py
@@ -31,7 +31,7 @@ class DependsOn(BaseModel):
         resource_type: str
         name: str
         alias: str
-        database: str
+        database: Optional[str]
         schema_: str = Field(..., alias="schema")
         columns: Optional[Dict[str, Column]]
         meta: Dict[str, Any]