diff --git a/pytest.ini b/pytest.ini
index da67dd11..1ea7f807 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -14,4 +14,4 @@ filterwarnings =
     error
     ignore:SelectableGroups dict interface:DeprecationWarning:flake8
     ignore:<class 'pytest_flake8[.]Flake8Item'> is not using a cooperative constructor:pytest.PytestDeprecationWarning
-    ignore:The .+? argument to Flake8Item is deprecated:pytest.PytestRemovedIn8Warning
+    ignore:The .+? argument to Flake8Item is deprecated:pytest.PytestDeprecationWarning
diff --git a/setup.py b/setup.py
index 07488abe..c8152c82 100644
--- a/setup.py
+++ b/setup.py
@@ -122,7 +122,8 @@ def find_namespaced_packages(namespace):
             "flake8",
             "mypy",
             "nextstrain-sphinx-theme",
-            "pytest",
+            "pytest; python_version != '3.9'",
+            "pytest !=7.0.0; python_version == '3.9'",
             "pytest-flake8",
             "recommonmark",
             "sphinx>=3",