diff --git a/setup.py b/setup.py
index 577836e..de9ec4d 100644
--- a/setup.py
+++ b/setup.py
@@ -344,7 +344,8 @@ def build_skia(build_base):
             "coverage",
             "pytest-xdist",
             "pytest-randomly",
-            "pytest-cython",
+            # https://github.com/lgpage/pytest-cython/pull/5#issuecomment-742782671
+            # "pytest-cython",
         ],
     },
     python_requires=">=3.6",
diff --git a/tox.ini b/tox.ini
index 76eeee7..d45d5d4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -47,5 +47,4 @@ python_classes =
 addopts =
     -v
     -r a
-    --doctest-cython
     -k "not __test__"