diff --git a/pyproject.toml b/pyproject.toml
index efc409e0..81571948 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,7 +23,7 @@ dependencies = [
 [project.optional-dependencies]
 dev = [
     "pytest>=7.0.0",
-    "black==25.1.0",
+    "black==26.3.1",
     "flake8==7.1.2",
     "flake8-bugbear==24.12.12",
     "flake8-comprehensions==3.16.0",
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 0a8a3146..a94f7cac 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -7,7 +7,7 @@ setuptools>=64.0.0
 wheel
 
 # Linting dependencies
-black==25.1.0
+black==26.3.1
 isort==6.0.1
 flake8==7.1.2
 flake8-bugbear==24.12.12