diff --git a/homeassistant/components/zeroconf.py b/homeassistant/components/zeroconf.py
index 675c3a65e5f..f3917078f34 100644
--- a/homeassistant/components/zeroconf.py
+++ b/homeassistant/components/zeroconf.py
@@ -12,7 +12,7 @@ import voluptuous as vol
 from homeassistant import util
 from homeassistant.const import (EVENT_HOMEASSISTANT_STOP, __version__)
 
-REQUIREMENTS = ['zeroconf==0.20.0']
+REQUIREMENTS = ['zeroconf==0.21.2']
 
 _LOGGER = logging.getLogger(__name__)
 
diff --git a/homeassistant/const.py b/homeassistant/const.py
index 4719e934109..2907aed5bd5 100644
--- a/homeassistant/const.py
+++ b/homeassistant/const.py
@@ -2,7 +2,7 @@
 """Constants used by Home Assistant components."""
 MAJOR_VERSION = 0
 MINOR_VERSION = 78
-PATCH_VERSION = '1'
+PATCH_VERSION = '2'
 __short_version__ = '{}.{}'.format(MAJOR_VERSION, MINOR_VERSION)
 __version__ = '{}.{}'.format(__short_version__, PATCH_VERSION)
 REQUIRED_PYTHON_VER = (3, 5, 3)
diff --git a/requirements_all.txt b/requirements_all.txt
index 1297d421b67..4102c58022c 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -1523,7 +1523,7 @@ youtube_dl==2018.09.10
 zengge==0.2
 
 # homeassistant.components.zeroconf
-zeroconf==0.20.0
+zeroconf==0.21.2
 
 # homeassistant.components.climate.zhong_hong
 zhong_hong_hvac==1.0.9