diff --git a/pyproject.toml b/pyproject.toml
index 1afd817..0a5e268 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -89,7 +89,7 @@ develop = [
   "black<25",
   "mypy<1.14",
   "poethepoet<1",
-  "pyproject-fmt<2.3",
+  "pyproject-fmt<2.6",
   "ruff<0.9",
   "validate-pyproject<0.24",
 ]