diff --git a/deevirt_schema/api/vm.py b/deevirt_schema/api/vm.py
index d9a288d..7ee9bb3 100644
--- a/deevirt_schema/api/vm.py
+++ b/deevirt_schema/api/vm.py
@@ -220,7 +220,7 @@ class VMPost(VM):
 """VM DELETE"""
 class VMDelete(BaseModel):
     id:UUID4 = Field()
-    inventory_only:bool = Field(default=True)
+    inventory_only:Optional[bool] = Field(default=True)
 
 """VM STOP"""
 class VMStop(BaseModel):
diff --git a/setup.py b/setup.py
index ce7285f..91c0f32 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@ from setuptools import find_packages, setup
 
 setup(
     name='deevirt_schema',
-    version='0.1.32',    
+    version='0.1.33',    
     description='Deevirt Schema',
     url='https://git.celeonet.fr/Deevirt/deevirt_schema.git',
     author='Celeonet',