diff --git a/setup.py b/setup.py
index 5e8933e5c5..4ae6fbd88a 100644
--- a/setup.py
+++ b/setup.py
@@ -89,7 +89,7 @@ def open_local(paths, mode="r", encoding="utf8"):
     "pytest==3.3.2",
     "multidict>=4.0,<5.0",
     "gunicorn",
-    "pytest-cov",
+    "pytest-cov==2.6.0",
     "aiohttp>=2.3.0,<=3.2.1",
     "beautifulsoup4",
     uvloop,
diff --git a/tox.ini b/tox.ini
index 4d3ca6236b..a23e31107a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -9,7 +9,7 @@ setenv =
 deps =
     coverage
     pytest==3.3.2
-    pytest-cov
+    pytest-cov==2.6.0
     pytest-sanic
     pytest-sugar
     aiohttp>=2.3,<=3.2.1