diff --git a/backend/requirements-dev.in b/backend/requirements-dev.in
index 38419aca..29491d47 100644
--- a/backend/requirements-dev.in
+++ b/backend/requirements-dev.in
@@ -15,7 +15,7 @@ tqdm~=4.66.2
 ipython~=8.22.2
 
 # style checker
-black~=24.2.0
+black~=24.3.0
 ruff~=0.3.2
 
 # dependency management
diff --git a/backend/requirements-dev.txt b/backend/requirements-dev.txt
index bb04c953..a23e9987 100644
--- a/backend/requirements-dev.txt
+++ b/backend/requirements-dev.txt
@@ -16,7 +16,7 @@ attrs==23.2.0
     #   -r requirements.txt
     #   jsonschema
     #   referencing
-black==24.2.0
+black==24.3.0
     # via -r requirements-dev.in
 blessed==1.20.0
     # via -r requirements.txt