diff --git a/hassio/addons/data.py b/hassio/addons/data.py
index a4da39d10..ad2d79d3a 100644
--- a/hassio/addons/data.py
+++ b/hassio/addons/data.py
@@ -16,7 +16,8 @@ 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_ENVIRONMENT, ATTR_HOST_NETWORK)
+    ATTR_LOCATON, ATTR_DEVICES, ATTR_ENVIRONMENT, ATTR_HOST_NETWORK,
+    ATTR_TMPFS)
 from ..config import Config
 from ..tools import read_json_file, write_json_file
 
@@ -304,6 +305,10 @@ class AddonsData(Config):
         """Return devices of addon."""
         return self._system_data[addon].get(ATTR_DEVICES)
 
+    def get_tmpfs(self, addon):
+        """Return tmpfs of addon."""
+        return self._system_data[addon].get(ATTR_TMPFS)
+
     def get_environment(self, addon):
         """Return environment of addon."""
         return self._system_data[addon].get(ATTR_ENVIRONMENT)
diff --git a/hassio/addons/validate.py b/hassio/addons/validate.py
index 96842e30c..f5eecb9d2 100644
--- a/hassio/addons/validate.py
+++ b/hassio/addons/validate.py
@@ -7,7 +7,7 @@ from ..const import (
     STARTUP_BEFORE, STARTUP_INITIALIZE, BOOT_AUTO, BOOT_MANUAL, ATTR_SCHEMA,
     ATTR_IMAGE, ATTR_URL, ATTR_MAINTAINER, ATTR_ARCH, ATTR_DEVICES,
     ATTR_ENVIRONMENT, ATTR_HOST_NETWORK, ARCH_ARMHF, ARCH_AARCH64, ARCH_AMD64,
-    ARCH_I386)
+    ARCH_I386, ATTR_TMPFS)
 
 
 MAP_VOLUME = r"^(config|ssl|addons|backup|share)(?::(rw|:ro))?$"
@@ -52,6 +52,8 @@ SCHEMA_ADDON_CONFIG = vol.Schema(vol.All({
     vol.Optional(ATTR_PORTS): dict,
     vol.Optional(ATTR_HOST_NETWORK, default=False): vol.Boolean(),
     vol.Optional(ATTR_DEVICES): [vol.Match(r"^(.*):(.*):([rwm]{1,3})$")],
+    vol.Optional(ATTR_TMPFS):
+        vol.Match(r"^size=(\d)*[kmg](,uid=\d{1,4})?(,rw)?$"),
     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,
diff --git a/hassio/const.py b/hassio/const.py
index 1ae61b72f..af7b67327 100644
--- a/hassio/const.py
+++ b/hassio/const.py
@@ -79,6 +79,7 @@ ATTR_BUILD = 'build'
 ATTR_DEVICES = 'devices'
 ATTR_ENVIRONMENT = 'environment'
 ATTR_HOST_NETWORK = 'host_network'
+ATTR_TMPFS = 'tmpfs'
 
 STARTUP_INITIALIZE = 'initialize'
 STARTUP_BEFORE = 'before'
diff --git a/hassio/dock/addon.py b/hassio/dock/addon.py
index 6c8a0ba8b..3e7a63d03 100644
--- a/hassio/dock/addon.py
+++ b/hassio/dock/addon.py
@@ -38,6 +38,14 @@ class DockerAddon(DockerBase):
             'TZ': self.config.timezone,
         }
 
+    @property
+    def tmpfs(self):
+        """Return tmpfs for docker add-on."""
+        options = self.addons_data.get_tmpfs(self.addon)
+        if options:
+            return {"/tmpfs": "{}".format(options)}
+        return None
+
     @property
     def volumes(self):
         """Generate volumes for mappings."""
@@ -100,7 +108,8 @@ class DockerAddon(DockerBase):
                 ports=self.addons_data.get_ports(self.addon),
                 devices=self.addons_data.get_devices(self.addon),
                 environment=self.environment,
-                volumes=self.volumes
+                volumes=self.volumes,
+                tmpfs=self.tmpfs
             )
 
             self.process_metadata()