diff --git a/requirements-dev.in b/requirements-dev.in
index 9b49d678..88e92206 100644
--- a/requirements-dev.in
+++ b/requirements-dev.in
@@ -12,7 +12,7 @@ flake8==7.1.1
 isort==5.13.2
 mypy==1.11.2
 pip-tools==7.4.1
-tox==4.20.0
+tox==4.21.0
 twine==5.1.1
 types-jsonschema==4.23.0.20240813
 types-lxml==2024.9.16
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 61de4934..8b7ed718 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -51,7 +51,7 @@ distlib==0.3.7
     # via virtualenv
 docutils==0.19
     # via readme-renderer
-filelock==3.15.4
+filelock==3.16.1
     # via
     #   tox
     #   virtualenv
@@ -97,7 +97,7 @@ pip-tools==7.4.1
     # via -r requirements-dev.in
 pkginfo==1.8.3
     # via twine
-platformdirs==4.2.2
+platformdirs==4.3.6
     # via
     #   black
     #   tox
@@ -116,7 +116,7 @@ pygments==2.15.0
     # via
     #   readme-renderer
     #   rich
-pyproject-api==1.7.1
+pyproject-api==1.8.0
     # via tox
 pyproject-hooks==1.0.0
     # via
@@ -155,7 +155,7 @@ tomli==2.0.1
     #   pyproject-api
     #   pyproject-hooks
     #   tox
-tox==4.20.0
+tox==4.21.0
     # via -r requirements-dev.in
 twine==5.1.1
     # via -r requirements-dev.in
@@ -181,12 +181,13 @@ typing-extensions==4.12.2
     #   black
     #   mypy
     #   rich
+    #   tox
     #   types-lxml
 urllib3==1.26.19
     # via
     #   requests
     #   twine
-virtualenv==20.26.3
+virtualenv==20.26.6
     # via tox
 webencodings==0.5.1
     # via bleach