diff --git a/pyproject.toml b/pyproject.toml
index 57907ce..06c7a70 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -40,7 +40,7 @@ dev = [
     "ruff",
     "mypy>=1.0,<1.19",
     "types-PyYAML",
-    "black>=23.0,<26.0",
+    "black>=23.0,<27.0",
     "black[jupyter]",
     "isort>=5.12,<6.2",
     "pytest",