diff --git a/homeassistant/components/notify/slack.py b/homeassistant/components/notify/slack.py
index 48f8013807315405308362a082d68e35d8533e9d..8dedee2a127fe555a4e473e98cc71379022fb6cb 100644
--- a/homeassistant/components/notify/slack.py
+++ b/homeassistant/components/notify/slack.py
@@ -14,7 +14,7 @@ from homeassistant.const import (
     CONF_API_KEY, CONF_USERNAME, CONF_ICON)
 import homeassistant.helpers.config_validation as cv
 
-REQUIREMENTS = ['slacker==0.9.28']
+REQUIREMENTS = ['slacker==0.9.29']
 
 _LOGGER = logging.getLogger(__name__)
 
diff --git a/requirements_all.txt b/requirements_all.txt
index 8c6f27476839f97eecf0cdb407e9c4ece03bcefe..6a37ff695cbd5d3e477554949ed770d9d62e5f95 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -458,7 +458,7 @@ scsgate==0.1.0
 sendgrid==3.6.0
 
 # homeassistant.components.notify.slack
-slacker==0.9.28
+slacker==0.9.29
 
 # homeassistant.components.notify.xmpp
 sleekxmpp==1.3.1