diff --git a/pyproject.toml b/pyproject.toml
index 1369ab7..0b72708 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -39,7 +39,7 @@ Changelog = "https://github.com/allenai/drawedumath/blob/main/CHANGELOG.md"
 [project.optional-dependencies]
 dev = [
     "ruff",
-    "mypy>=1.0,<1.5",
+    "mypy>=1.0,<1.15",
     "black>=23.0,<24.0",
     "isort>=5.12,<5.13",
     "pytest",