diff --git a/setup.cfg b/setup.cfg
index 15f1be9..d4f4f80 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -39,7 +39,7 @@ install_requires =
 
 [options.extras_require]
 dev =
-    black~=24.3.0
+    black~=24.4.0
     build~=1.2.1
     isort~=5.13.0
     types-pytz~=2024.1.0.20240203
diff --git a/test-requirements.txt b/test-requirements.txt
index 83c9470..787ff7e 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,4 +1,4 @@
-black==24.3.0
+black==24.4.0
 build>=0.7
 isort>=5.10
 pre-commit~=3.3