diff --git a/pyproject.toml b/pyproject.toml
index 4f1d2a6..10f540a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -78,7 +78,7 @@ lint = [
     "pydocstyle==6.1.1",
     "flake8==7.3.0",
     "pylint==4.0.5",
-    "black==26.3.1",
+    "black==26.5.1",
 ]
 strict = [
     "spglib==2.7.0",