Update lower bound for dev extra tox requirement

Harmon758 · Harmon758 · commit ba6e6b17f4c2 · 2022-04-05T18:47:07.000-05:00
diff --git a/setup.py b/setup.py
@@ -48,7 +48,7 @@
         "dev": [
             "coverage>=4.4.2",
             "coveralls>=2.1.0",
-            "tox>=3.14.0",
+            "tox>=3.21.0",
          ],
         "socks": ["requests[socks]>=2.27.0,<3"],
         "test": tests_require,
