diff --git a/app/models/jenkins.py b/app/models/jenkins.py
index e84ca17e..116bcce9 100644
--- a/app/models/jenkins.py
+++ b/app/models/jenkins.py
@@ -5,7 +5,7 @@
     
 class JenkinsInstallation(BaseModel):
 
-    os: str = 'Ubuntu'
+    os: str | None = 'Ubuntu'
     
     environment:str = 'Linux'