diff --git a/pyproject.toml b/pyproject.toml
index 881c898..fe87191 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -53,7 +53,7 @@ tests = [
     "pytest-mock",
     "pyinstaller",
     "importlib_resources<6; python_version < '3.10'",
-    "black==24.10.0",
+    "black==26.5.1",
 ]
 
 [project.entry-points.pyinstaller40]