diff --git a/octoprint_customControl/__init__.py b/octoprint_customControl/__init__.py
index 62b465b..a647e98 100644
--- a/octoprint_customControl/__init__.py
+++ b/octoprint_customControl/__init__.py
@@ -61,6 +61,7 @@ class CustomControlPlugin(octoprint.plugin.SettingsPlugin,
 
 
 __plugin_name__ = "Custom Control Editor"
+__plugin_pythoncompat__ = ">=2.7,<4"
 
 
 def __plugin_load__():