diff --git a/pyproject.toml b/pyproject.toml
index dfeea6b8..aba767b6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -70,7 +70,7 @@ test = [
     "sphinx",
     "sphinx-autobuild",
     "sphinx_rtd_theme",
-    "black==24.8.0",
+    "black==26.3.1",
 ]
 
 notebook = [