diff --git a/pyproject.toml b/pyproject.toml
index be8e906b..05f08930 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -33,7 +33,7 @@ dev = [
     "pytest>=7.1.2",
     "pytest-cov>=3.0.0",
     "pytest-mock>=3.7.0",
-    "black>=23.1.0",
+    "black>=26.5.1",
     "belay>=0.21.3",
     "tqdm>=4.68.2",
     "matplotlib>=3.7.4",