diff --git a/tox.ini b/tox.ini
index 51e9def..f3915a1 100644
--- a/tox.ini
+++ b/tox.ini
@@ -54,6 +54,7 @@ commands =
   mypy skyline_apiserver
 
 [testenv:pep8]
+skip_install = true
 basepython = python3.12
 description =
   Run style checks.