diff --git a/pyproject.toml b/pyproject.toml
index aff29f8..0f01256 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -41,7 +41,7 @@ dependencies = [
 dev = [
   "bandit>=1.8.6,<2",
   "build>=1.3,<2",
-  "mypy>=1.17,<2",
+  "mypy>=1.17,<3",
   "pytest>=8.4,<10",
   "pytest-cov>=6.2,<8",
   "ruff>=0.12,<1",