diff --git a/pyproject.toml b/pyproject.toml
index 78bc407..431f22f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -128,7 +128,7 @@ develop = [
   "black[jupyter]<25",
   "mypy<1.12",
   "poethepoet<0.30",
-  "pyproject-fmt<2.3",
+  "pyproject-fmt<2.4",
   "ruff<0.7",
   "validate-pyproject<0.21",
 ]