diff --git a/setup.py b/setup.py
index ea2c27d8d..6a1c6b500 100644
--- a/setup.py
+++ b/setup.py
@@ -46,6 +46,7 @@
     extras_require={
         "async": ["aiohttp>=3.7.3,<4"],
         "dev": [
+            "coverage>=4.4.2",
             "coveralls>=2.1.0",
             "tox>=3.14.0",
          ],