diff --git a/compose/config/config.py b/compose/config/config.py
index 055ae18aca2..3c10af035e2 100644
--- a/compose/config/config.py
+++ b/compose/config/config.py
@@ -76,6 +76,7 @@
     'shm_size',
     'stdin_open',
     'stop_signal',
+    'tmpfs',
     'tty',
     'user',
     'volume_driver',
@@ -589,6 +590,9 @@ def process_service(service_config):
     if 'extra_hosts' in service_dict:
         service_dict['extra_hosts'] = parse_extra_hosts(service_dict['extra_hosts'])
 
+    if 'tmpfs' in service_dict:
+        service_dict['tmpfs'] = to_list(service_dict['tmpfs'])
+
     for field in ['dns', 'dns_search']:
         if field in service_dict:
             service_dict[field] = to_list(service_dict[field])
@@ -725,6 +729,7 @@ def merge_service_dicts(base, override, version):
         'external_links',
         'ports',
         'volumes_from',
+        'tmpfs',
     ]:
         md.merge_field(field, operator.add, default=[])
 
diff --git a/compose/config/service_schema_v1.json b/compose/config/service_schema_v1.json
index 4d974d71084..0cd0a415e9b 100644
--- a/compose/config/service_schema_v1.json
+++ b/compose/config/service_schema_v1.json
@@ -101,6 +101,7 @@
         "shm_size": {"type": ["number", "string"]},
         "stdin_open": {"type": "boolean"},
         "stop_signal": {"type": "string"},
+        "tmpfs": {"$ref": "#/definitions/string_or_list"},
         "tty": {"type": "boolean"},
         "ulimits": {
           "type": "object",
diff --git a/compose/config/service_schema_v2.0.json b/compose/config/service_schema_v2.0.json
index edccedc664b..3b64b448fb3 100644
--- a/compose/config/service_schema_v2.0.json
+++ b/compose/config/service_schema_v2.0.json
@@ -160,6 +160,7 @@
         "shm_size": {"type": ["number", "string"]},
         "stdin_open": {"type": "boolean"},
         "stop_signal": {"type": "string"},
+        "tmpfs": {"$ref": "#/definitions/string_or_list"},
         "tty": {"type": "boolean"},
         "ulimits": {
           "type": "object",
diff --git a/compose/service.py b/compose/service.py
index 8b22b7d7580..0b26dfa0943 100644
--- a/compose/service.py
+++ b/compose/service.py
@@ -655,6 +655,7 @@ def _get_container_host_config(self, override_options, one_off=False):
             cgroup_parent=options.get('cgroup_parent'),
             cpu_quota=options.get('cpu_quota'),
             shm_size=options.get('shm_size'),
+            tmpfs=options.get('tmpfs'),
         )
 
     def build(self, no_cache=False, pull=False, force_rm=False):
diff --git a/docs/compose-file.md b/docs/compose-file.md
index f446e2ab3ca..b768c817aa3 100644
--- a/docs/compose-file.md
+++ b/docs/compose-file.md
@@ -213,6 +213,15 @@ Custom DNS search domains. Can be a single value or a list.
       - dc1.example.com
       - dc2.example.com
 
+### tmpfs
+
+RAM disks to mount inside the container. Can be a single value or a list.
+
+    tmpfs: /run
+    tmpfs:
+      - /run
+      - /tmp
+
 ### entrypoint
 
 Override the default entrypoint.
diff --git a/docs/extends.md b/docs/extends.md
index bceb02578a7..1be0622c1a6 100644
--- a/docs/extends.md
+++ b/docs/extends.md
@@ -316,8 +316,8 @@ Example of build replacing image:
     # result
     build: .
 
-For the **multi-value options** `ports`, `expose`, `external_links`, `dns` and
-`dns_search`, Compose concatenates both sets of values:
+For the **multi-value options** `ports`, `expose`, `external_links`, `dns`,
+`dns_search`, and `tmpfs`, Compose concatenates both sets of values:
 
     # original service
     expose:
diff --git a/tests/integration/service_test.py b/tests/integration/service_test.py
index bcb8733541f..1f0b0ca08b2 100644
--- a/tests/integration/service_test.py
+++ b/tests/integration/service_test.py
@@ -871,6 +871,11 @@ def test_dns_search(self):
         container = create_and_start_container(service)
         self.assertEqual(container.get('HostConfig.DnsSearch'), ['dc1.example.com', 'dc2.example.com'])
 
+    def test_tmpfs(self):
+        service = self.create_service('web', tmpfs=['/run'])
+        container = create_and_start_container(service)
+        self.assertEqual(container.get('HostConfig.Tmpfs'), {'/run': ''})
+
     def test_working_dir_param(self):
         service = self.create_service('container', working_dir='/working/dir/sample')
         container = service.create_container()
diff --git a/tests/unit/config/config_test.py b/tests/unit/config/config_test.py
index ce37d794f75..7b1b7b30cf9 100644
--- a/tests/unit/config/config_test.py
+++ b/tests/unit/config/config_test.py
@@ -1181,6 +1181,21 @@ def test_normalize_dns_options(self):
             }
         ]
 
+    def test_tmpfs_option(self):
+        actual = config.load(build_config_details({
+            'web': {
+                'image': 'alpine',
+                'tmpfs': '/run',
+            }
+        }))
+        assert actual.services == [
+            {
+                'name': 'web',
+                'image': 'alpine',
+                'tmpfs': ['/run'],
+            }
+        ]
+
     def test_merge_service_dicts_from_files_with_extends_in_base(self):
         base = {
             'volumes': ['.:/app'],