diff --git a/homeassistant/components/rfxtrx.py b/homeassistant/components/rfxtrx.py
index ebb6a9536ed72..c3191ef9e3bd3 100644
--- a/homeassistant/components/rfxtrx.py
+++ b/homeassistant/components/rfxtrx.py
@@ -14,7 +14,7 @@
 from homeassistant.helpers.entity import Entity
 from homeassistant.const import (ATTR_ENTITY_ID, TEMP_CELSIUS)
 
-REQUIREMENTS = ['pyRFXtrx==0.8.0']
+REQUIREMENTS = ['pyRFXtrx==0.9.0']
 
 DOMAIN = "rfxtrx"
 
diff --git a/homeassistant/components/sensor/rfxtrx.py b/homeassistant/components/sensor/rfxtrx.py
index 49912acb621b3..6cd7b9772310f 100644
--- a/homeassistant/components/sensor/rfxtrx.py
+++ b/homeassistant/components/sensor/rfxtrx.py
@@ -41,6 +41,7 @@ def setup_platform(hass, config, add_devices_callback, discovery_info=None):
         sub_sensors = {}
         data_types = entity_info[ATTR_DATA_TYPE]
         if len(data_types) == 0:
+            data_type = "Unknown"
             for data_type in DATA_TYPES:
                 if data_type in event.values:
                     data_types = [data_type]
diff --git a/requirements_all.txt b/requirements_all.txt
index 5e08ee42f677f..9538966d1aca8 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -248,7 +248,7 @@ pushetta==1.0.15
 py-cpuinfo==0.2.3
 
 # homeassistant.components.rfxtrx
-pyRFXtrx==0.8.0
+pyRFXtrx==0.9.0
 
 # homeassistant.components.notify.xmpp
 pyasn1-modules==0.0.8