diff --git a/hassio/addons/data.py b/hassio/addons/data.py
index 4228c053a..c9e134823 100644
--- a/hassio/addons/data.py
+++ b/hassio/addons/data.py
@@ -16,7 +16,7 @@ from ..const import (
     FILE_HASSIO_ADDONS, ATTR_NAME, ATTR_VERSION, ATTR_SLUG, ATTR_DESCRIPTON,
     ATTR_STARTUP, ATTR_BOOT, ATTR_MAP, ATTR_OPTIONS, ATTR_PORTS, BOOT_AUTO,
     ATTR_SCHEMA, ATTR_IMAGE, ATTR_REPOSITORY, ATTR_URL, ATTR_ARCH,
-    ATTR_LOCATON, ATTR_DEVICES)
+    ATTR_LOCATON, ATTR_DEVICES, ATTR_ENVIRONMENT)
 from ..config import Config
 from ..tools import read_json_file, write_json_file
 
@@ -298,6 +298,10 @@ class AddonsData(Config):
         """Return devices of addon."""
         return self._system_data[addon].get(ATTR_DEVICES)
 
+    def get_environment(self, addon):
+        """Return environment of addon."""
+        return self._system_data[addon].get(ATTR_ENVIRONMENT)
+
     def get_url(self, addon):
         """Return url of addon."""
         if addon in self._addons_cache:
diff --git a/hassio/addons/validate.py b/hassio/addons/validate.py
index 39d8f3c1a..d7499c563 100644
--- a/hassio/addons/validate.py
+++ b/hassio/addons/validate.py
@@ -5,8 +5,8 @@ from ..const import (
     ATTR_NAME, ATTR_VERSION, ATTR_SLUG, ATTR_DESCRIPTON, ATTR_STARTUP,
     ATTR_BOOT, ATTR_MAP, ATTR_OPTIONS, ATTR_PORTS, STARTUP_ONCE, STARTUP_AFTER,
     STARTUP_BEFORE, BOOT_AUTO, BOOT_MANUAL, ATTR_SCHEMA, ATTR_IMAGE,
-    ATTR_URL, ATTR_MAINTAINER, ATTR_ARCH, ATTR_DEVICES, ARCH_ARMHF,
-    ARCH_AARCH64, ARCH_AMD64, ARCH_I386)
+    ATTR_URL, ATTR_MAINTAINER, ATTR_ARCH, ATTR_DEVICES, ATTR_ENVIRONMENT,
+    ARCH_ARMHF, ARCH_AARCH64, ARCH_AMD64, ARCH_I386)
 
 
 MAP_VOLUME = r"^(config|ssl|addons|backup)(?::(rw|:ro))?$"
@@ -39,6 +39,7 @@ SCHEMA_ADDON_CONFIG = vol.Schema({
     vol.Optional(ATTR_PORTS): dict,
     vol.Optional(ATTR_DEVICES): [vol.Match(r"^(.*):(.*):([rwm]{1,3})$")],
     vol.Optional(ATTR_MAP, default=[]): [vol.Match(MAP_VOLUME)],
+    vol.Optional(ATTR_ENVIRONMENT): {vol.Match(r"\w*"): vol.Coerce(str)},
     vol.Required(ATTR_OPTIONS): dict,
     vol.Required(ATTR_SCHEMA): {
         vol.Coerce(str): vol.Any(ADDON_ELEMENT, [
diff --git a/hassio/const.py b/hassio/const.py
index 61aed2c40..6f2aeb6c8 100644
--- a/hassio/const.py
+++ b/hassio/const.py
@@ -76,6 +76,7 @@ ATTR_SESSION = 'session'
 ATTR_LOCATON = 'location'
 ATTR_BUILD = 'build'
 ATTR_DEVICES = 'devices'
+ATTR_ENVIRONMENT = 'environment'
 
 STARTUP_BEFORE = 'before'
 STARTUP_AFTER = 'after'
diff --git a/hassio/dock/addon.py b/hassio/dock/addon.py
index 813890119..e406e8c9f 100644
--- a/hassio/dock/addon.py
+++ b/hassio/dock/addon.py
@@ -82,6 +82,7 @@ class DockerAddon(DockerBase):
                 network_mode='bridge',
                 ports=self.addons_data.get_ports(self.addon),
                 devices=self.addons_data.get_devices(self.addon),
+                environment=self.addons_data.get_environment(self.addon),
                 volumes=self.volumes,
             )