diff --git a/esphomeyaml/components/sensor/dallas.py b/esphomeyaml/components/sensor/dallas.py
index 945e31cdbe..a0446abacb 100644
--- a/esphomeyaml/components/sensor/dallas.py
+++ b/esphomeyaml/components/sensor/dallas.py
@@ -11,7 +11,7 @@ PLATFORM_SCHEMA = vol.All(sensor.PLATFORM_SCHEMA.extend({
     vol.Exclusive(CONF_ADDRESS, 'dallas'): cv.hex_int,
     vol.Exclusive(CONF_INDEX, 'dallas'): cv.positive_int,
     cv.GenerateID(CONF_DALLAS_ID): cv.use_variable_id(DallasComponent),
-    vol.Optional(CONF_RESOLUTION): vol.All(vol.Coerce(int), vol.Range(min=8, max=12)),
+    vol.Optional(CONF_RESOLUTION): vol.All(vol.Coerce(int), vol.Range(min=9, max=12)),
 }).extend(sensor.SENSOR_SCHEMA.schema), cv.has_at_least_one_key(CONF_ADDRESS, CONF_INDEX))