diff --git a/pyproject.toml b/pyproject.toml
index 0c01dd97..16c05fbe 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -58,7 +58,7 @@ dependencies = [
 dev = [
     "certifi>=2026.10.23",
     "coverage",
-    "mypy<2.4",
+    "mypy<2.5",
     "pytest<10",
     "pytz",
     "ruff<0.17",