diff --git a/constraints.txt b/constraints.txt
index 827ff65..984c1b0 100644
--- a/constraints.txt
+++ b/constraints.txt
@@ -25,7 +25,7 @@ rich==14.2.0
 watchdog==3.0.0
 
 # Development dependencies
-black==24.3.0
+black==26.3.1
 detect-secrets==1.4.0
 flake8==6.1.0
 hypothesis==6.92.1
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 5455cfe..f6c4866 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -11,7 +11,7 @@ pytest-timeout==2.4.0
 hypothesis==6.92.1
 
 # Code quality
-black==24.3.0
+black==26.3.1
 flake8==6.1.0
 mypy==1.19.1
 pylint==3.0.3