diff --git a/tox.ini b/tox.ini
index 48493129..0701b168 100644
--- a/tox.ini
+++ b/tox.ini
@@ -7,6 +7,9 @@ minversion = 3.10.0
 usedevelop = True
 deps = -rtest_requirements.txt
 whitelist_externals = sh
+install_command =
+    # temporary work around for https://github.com/pypa/pip/issues/6434
+    python -m pip install --no-use-pep517 {opts} {packages}
 commands =
     pytest
     sh scripts/black