diff --git a/.travis.yml b/.travis.yml
index d6430ca0..8df1674c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,6 +14,8 @@ matrix:
       os: linux
       sudo: required
       dist: trusty
+      language: python
+      python: 3.5
     - env:
         - SALT_NODE_ID=servo-mac1
         - SALT_FROM_SCRATCH=true
@@ -25,6 +27,8 @@ matrix:
       os: linux
       sudo: required
       dist: trusty
+      language: python
+      python: 3.5
     - env:
         - SALT_NODE_ID=servo-master1
         - SALT_FROM_SCRATCH=true
@@ -40,6 +44,8 @@ matrix:
       os: linux
       sudo: required
       dist: trusty
+      language: python
+      python: 3.5
     - env:
         - SALT_NODE_ID=servo-mac1
         - SALT_FROM_SCRATCH=false
@@ -51,6 +57,8 @@ matrix:
       os: linux
       sudo: required
       dist: trusty
+      language: python
+      python: 3.5
     - env:
         - SALT_NODE_ID=servo-master1
         - SALT_FROM_SCRATCH=false
diff --git a/.travis/dispatch.sh b/.travis/dispatch.sh
index be94744b..b6639243 100755
--- a/.travis/dispatch.sh
+++ b/.travis/dispatch.sh
@@ -72,4 +72,10 @@ else
     if [[ "${SALT_NODE_ID}" == "servo-master1" ]]; then
         ./test.py sls.buildbot.master sls.homu sls.nginx
     fi
+
+    # Salt doesn't support timezone.system on OSX
+    # See https://github.com/saltstack/salt/issues/31345
+    if [[ ! "${SALT_NODE_ID}" =~ servo-mac* ]]; then
+        ./test.py sls.common
+    fi
 fi
diff --git a/common/init.sls b/common/init.sls
index c433ba7f..6210a870 100644
--- a/common/init.sls
+++ b/common/init.sls
@@ -45,6 +45,11 @@ servo:
     - shell: /bin/bash
     - home: {{ common.servo_home }}
 
+{% if grains['os'] != 'MacOS' %}
+UTC:
+    timezone.system
+{% endif %}
+
 {% for hostname, ip in common.hosts.items() %}
 host-{{ hostname }}:
   host.present:
diff --git a/tests/sls/common/__init__.py b/tests/sls/common/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/tests/sls/common/timezone.py b/tests/sls/common/timezone.py
new file mode 100644
index 00000000..add0384a
--- /dev/null
+++ b/tests/sls/common/timezone.py
@@ -0,0 +1,18 @@
+import subprocess
+
+from tests.util import Failure, Success
+
+
+def run():
+    ret = subprocess.run(
+        ['date'],
+        stdout=subprocess.PIPE,
+        stderr=subprocess.PIPE
+    )
+
+    stdout = ret.stdout.decode('utf-8')
+
+    if ret.returncode == 0 and 'UTC' in stdout:
+        return Success('Date is in UTC')
+    else:
+        return Failure('Date is not in UTC: ', stdout)