diff --git a/ue4docker/infrastructure/WindowsUtils.py b/ue4docker/infrastructure/WindowsUtils.py
index 250b7637..31bbd028 100644
--- a/ue4docker/infrastructure/WindowsUtils.py
+++ b/ue4docker/infrastructure/WindowsUtils.py
@@ -49,7 +49,7 @@ def requiredSizeLimit():
 		'''
 		Returns the minimum required image size limit (in GB) for Windows containers
 		'''
-		return 200.0
+		return 400.0
 	
 	@staticmethod
 	def minimumRequiredVersion():