diff --git a/requirements/tox.txt b/requirements/tox.txt
index 807a294..e363935 100644
--- a/requirements/tox.txt
+++ b/requirements/tox.txt
@@ -51,9 +51,9 @@ pyproject-api==1.8.0 \
     --hash=sha256:3d7d347a047afe796fd5d1885b1e391ba29be7169bd2f102fcd378f04273d228 \
     --hash=sha256:77b8049f2feb5d33eefcc21b57f1e279636277a8ac8ad6b5871037b243778496
     # via tox
-tox==4.19.0 \
-    --hash=sha256:66177d887f9d7ef8eaa9b58b187f7b865fa4c58650086c01336e82c9831e1867 \
-    --hash=sha256:6e20a520db7710f6980b8ec96bde189d6b8cf41b327ec703b03e1a2a447b1aaf
+tox==4.20.0 \
+    --hash=sha256:21a8005e3d3fe5658a8e36b8ca3ed13a4230429063c5cc2a2fdac6ee5aa0de34 \
+    --hash=sha256:5b78a49b6eaaeab3ae4186415e7c97d524f762ae967c63562687c3e5f0ec23d5
     # via
     #   -r requirements/tox.in
     #   tox-uv