diff --git a/pyproject.toml b/pyproject.toml
index 6f11471..4176411 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -30,7 +30,7 @@ dynamic = ["version"]
 [dependency-groups]
 dev = [
   # Pin below 1.20.0 until the current mypy incompatibility is resolved.
-  "mypy==1.19.1",
+  "mypy==2.1.0",
   "pre-commit==4.6.0",
   "pytest==9.0.3",
   "pytest-asyncio==1.3.0",