diff --git a/storyboard/tests/api/auth/test_oauth.py b/storyboard/tests/api/auth/test_oauth.py
index 7ec2a042..49038059 100644
--- a/storyboard/tests/api/auth/test_oauth.py
+++ b/storyboard/tests/api/auth/test_oauth.py
@@ -504,6 +504,38 @@ class TestOAuthAccessToken(BaseOAuthTest):
     access tokens.
     """
 
+    tested_timezones = [
+        'Etc/GMT',
+        'Etc/GMT+0',
+        'Etc/GMT+1',
+        'Etc/GMT+10',
+        'Etc/GMT+11',
+        'Etc/GMT+12',
+        'Etc/GMT+2',
+        'Etc/GMT+3',
+        'Etc/GMT+4',
+        'Etc/GMT+5',
+        'Etc/GMT+6',
+        'Etc/GMT+7',
+        'Etc/GMT+8',
+        'Etc/GMT+9',
+        'Etc/GMT-0',
+        'Etc/GMT-1',
+        'Etc/GMT-10',
+        'Etc/GMT-11',
+        'Etc/GMT-12',
+        'Etc/GMT-13',
+        'Etc/GMT-14',
+        'Etc/GMT-2',
+        'Etc/GMT-3',
+        'Etc/GMT-4',
+        'Etc/GMT-5',
+        'Etc/GMT-6',
+        'Etc/GMT-7',
+        'Etc/GMT-8',
+        'Etc/GMT-9',
+    ]
+
     def test_valid_access_request(self):
         """This test ensures that the access token request may execute
         properly with a valid token.
@@ -577,7 +609,7 @@ class TestOAuthAccessToken(BaseOAuthTest):
             old_tz = os.environ['TZ']
 
         # Convert now into every possible timezone out there :)
-        for name in pytz.all_timezones:
+        for name in self.tested_timezones:
 
             # Override the 'default timezone' for the current runtime.
             os.environ['TZ'] = name
@@ -623,7 +655,7 @@ class TestOAuthAccessToken(BaseOAuthTest):
             old_tz = os.environ['TZ']
 
         # Convert now into every possible timezone out there :)
-        for name in pytz.all_timezones:
+        for name in self.tested_timezones:
 
             # Override the 'default timezone' for the current runtime.
             os.environ['TZ'] = name