diff --git a/cloud/docker/docker.py b/cloud/docker/docker.py
index 1e55b31e8f0..28478667e2f 100644
--- a/cloud/docker/docker.py
+++ b/cloud/docker/docker.py
@@ -417,6 +417,7 @@ EXAMPLES = '''
 '''
 
 HAS_DOCKER_PY = True
+DEFAULT_DOCKER_API_VERSION = None
 
 import sys
 import json