diff --git a/requirements/edx/development.txt b/requirements/edx/development.txt
index ffc972490c0f8ac74b2d45938420a09283d58892..5b14bc16a484bdd68c72977792b29a632b1f5534 100644
--- a/requirements/edx/development.txt
+++ b/requirements/edx/development.txt
@@ -295,7 +295,7 @@ text-unidecode==1.3       # via -r requirements/edx/testing.txt, faker, python-s
 tincan==1.0.0             # via -r requirements/edx/testing.txt, edx-event-routing-backends
 toml==0.10.2              # via -r requirements/edx/testing.txt, pylint, pytest, tox
 tox-battery==0.6.1        # via -r requirements/edx/testing.txt
-tox==3.21.2               # via -r requirements/edx/testing.txt, tox-battery
+tox==3.21.3               # via -r requirements/edx/testing.txt, tox-battery
 tqdm==4.56.0              # via -r requirements/edx/testing.txt, nltk
 transifex-client==0.14.2  # via -r requirements/edx/testing.txt
 ua-parser==0.10.0         # via -r requirements/edx/testing.txt, django-cookies-samesite
diff --git a/requirements/edx/testing.txt b/requirements/edx/testing.txt
index 4b9a14f77e567e0ffdd6fa55afa4962dcca378e6..185639976a88ae52288da7c893f58ade548fb4b6 100644
--- a/requirements/edx/testing.txt
+++ b/requirements/edx/testing.txt
@@ -274,7 +274,7 @@ text-unidecode==1.3       # via -r requirements/edx/base.txt, faker, python-slug
 tincan==1.0.0             # via -r requirements/edx/base.txt, edx-event-routing-backends
 toml==0.10.2              # via pylint, pytest, tox
 tox-battery==0.6.1        # via -r requirements/edx/testing.in
-tox==3.21.2               # via -r requirements/edx/testing.in, tox-battery
+tox==3.21.3               # via -r requirements/edx/testing.in, tox-battery
 tqdm==4.56.0              # via -r requirements/edx/base.txt, nltk
 transifex-client==0.14.2  # via -r requirements/edx/testing.in
 ua-parser==0.10.0         # via -r requirements/edx/base.txt, django-cookies-samesite