diff --git a/setup.py b/setup.py
index ccb1142fb6..057fe09c4c 100644
--- a/setup.py
+++ b/setup.py
@@ -269,7 +269,7 @@ def run(self):
 core_testenv = [
     'pytest',
     'pytest-cov',
-#    'pytest-rerunfailures',  # disabled 2020-08-28 for <https://github.com/pytest-dev/pytest-rerunfailures/issues/128>
+    'pytest-rerunfailures',
     'mock',
     'cython',
     'testfixtures',