diff --git a/homeassistant/components/discovery.py b/homeassistant/components/discovery.py
index 450019022e1..089db3fb324 100644
--- a/homeassistant/components/discovery.py
+++ b/homeassistant/components/discovery.py
@@ -19,7 +19,7 @@ from homeassistant.const import (
 
 DOMAIN = "discovery"
 DEPENDENCIES = []
-REQUIREMENTS = ['netdisco==0.4.1']
+REQUIREMENTS = ['netdisco==0.4.2']
 
 SCAN_INTERVAL = 300  # seconds
 
diff --git a/requirements_all.txt b/requirements_all.txt
index 4610100b161..d65516a7dd6 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -87,7 +87,7 @@ https://github.com/theolind/pymysensors/archive/35b87d880147a34107da0d40cb815d75
 pynetgear==0.3
 
 # Netdisco (discovery)
-netdisco==0.4.1
+netdisco==0.4.2
 
 # Wemo (switch.wemo)
 pywemo==0.3.1