Index: twython-3.9.1/tests/test_core.py
===================================================================
--- twython-3.9.1.orig/tests/test_core.py
+++ twython-3.9.1/tests/test_core.py
@@ -285,7 +285,13 @@ class TwythonAPITestCase(unittest.TestCa
 
         self.api.get(endpoint)
 
-        self.assertEqual(b'gzip, deflate', responses.calls[0].request.headers['Accept-Encoding'])
+        accept_encoding = b'gzip, deflate'
+        try:
+            import compression.zstd
+            accept_encoding += b', zstd'
+        except ImportError:
+            pass
+        self.assertEqual(accept_encoding, responses.calls[0].request.headers['Accept-Encoding'])
 
     # Static methods
     def test_construct_api_url(self):