diff --git a/homeassistant/components/ecobee/climate.py b/homeassistant/components/ecobee/climate.py
index ccfddca4b03..94396bbf883 100644
--- a/homeassistant/components/ecobee/climate.py
+++ b/homeassistant/components/ecobee/climate.py
@@ -24,6 +24,7 @@ from homeassistant.components.climate.const import (
     SUPPORT_AUX_HEAT,
     SUPPORT_FAN_MODE,
     SUPPORT_PRESET_MODE,
+    SUPPORT_TARGET_HUMIDITY,
     SUPPORT_TARGET_TEMPERATURE,
     SUPPORT_TARGET_TEMPERATURE_RANGE,
 )
@@ -161,6 +162,7 @@ SUPPORT_FLAGS = (
     | SUPPORT_AUX_HEAT
     | SUPPORT_TARGET_TEMPERATURE_RANGE
     | SUPPORT_FAN_MODE
+    | SUPPORT_TARGET_HUMIDITY
 )
 
 
@@ -651,7 +653,7 @@ class Thermostat(ClimateEntity):
 
     def set_humidity(self, humidity):
         """Set the humidity level."""
-        self.data.ecobee.set_humidity(self.thermostat_index, humidity)
+        self.data.ecobee.set_humidity(self.thermostat_index, int(humidity))
 
     def set_hvac_mode(self, hvac_mode):
         """Set HVAC mode (auto, auxHeatOnly, cool, heat, off)."""