diff --git a/tests/test_cmd_docker_build.py b/tests/test_cmd_docker_build.py
index 9d2e4e54..9efec5de 100644
--- a/tests/test_cmd_docker_build.py
+++ b/tests/test_cmd_docker_build.py
@@ -309,3 +309,6 @@ def test_connection(self, environment, scriptpath):
 
     def try_build_new_image(self, dockerfile, tag, buildargs):
         return True
+
+    def pull_base_image(self, tag):
+        return None