diff --git a/dev-requirements.txt b/dev-requirements.txt
index c25d0db76..728b6b621 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -4,6 +4,6 @@ pre-commit==3.8.0
 pytest-cov==5.0.0
 pytest-xdist==3.6.1
 pytest==8.3.3
-tox==4.21.0
+tox==4.21.1
 numpy==2.1.1
 Pillow==10.4.0