diff --git a/octoprint_webcamtab/__init__.py b/octoprint_webcamtab/__init__.py
index 8f6934d..a7da398 100644
--- a/octoprint_webcamtab/__init__.py
+++ b/octoprint_webcamtab/__init__.py
@@ -46,6 +46,7 @@ class WebcamTabPlugin(octoprint.plugin.AssetPlugin,
 
 
 __plugin_name__ = "Webcam Tab"
+__plugin_pythoncompat__ = ">=2.7,<4"
 
 
 def __plugin_load__():