diff --git a/README.md b/README.md
index d150868..b55e940 100644
--- a/README.md
+++ b/README.md
@@ -197,7 +197,7 @@ def incoming():
             TextMessage(text="thanks for subscribing!")
         ])
     elif isinstance(viber_request, ViberFailedRequest):
-        logger.warn("client failed receiving message. failure: {0}".format(viber_request))
+        logger.warning("client failed receiving message. failure: {0}".format(viber_request))
 
     return Response(status=200)
 
diff --git a/sample_bot.py b/sample_bot.py
index 1c8a1da..8f4ff3a 100644
--- a/sample_bot.py
+++ b/sample_bot.py
@@ -45,7 +45,7 @@ def incoming():
 			TextMessage(None, None, viber_request.get_event_type())
 		])
 	elif isinstance(viber_request, ViberFailedRequest):
-		logger.warn("client failed receiving message. failure: {0}".format(viber_request))
+		logger.warning("client failed receiving message. failure: {0}".format(viber_request))
 
 	return Response(status=200)