diff --git a/pyproject.toml b/pyproject.toml
index 931e808..2b5711b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,7 +22,7 @@ dependencies = [
 
 [project.optional-dependencies]
 dev = [
-    "mypy>=1.15,<2",
+    "mypy>=1.15,<3",
     "pytest>=8,<10",
     "pytest-asyncio>=1,<2",
     "ruff>=0.15.8,<0.16",