diff --git a/gns3server/schemas/controller/appliances.py b/gns3server/schemas/controller/appliances.py
index 6a0ef5720..563f2f5fa 100644
--- a/gns3server/schemas/controller/appliances.py
+++ b/gns3server/schemas/controller/appliances.py
@@ -285,6 +285,7 @@ class DockerConsoleType(str, Enum):
     http = 'http'
     https = 'https'
     none = 'none'
+    docker_exec = 'docker_exec'
 
 
 class ChecksumType(str, Enum):