diff --git a/pyproject.toml b/pyproject.toml
index e4ea7e8..0c7492d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -34,7 +34,7 @@ dev = [
     "pytest-benchmark>=5.2.3",
     "pytest-cov>=7.1.0",
     "ruff>=0.15.22",
-    "mypy>=2.1.0",
+    "mypy>=2.3.0",
     # types-PyYAML so `mypy src/brig/` is clean locally without CI
     # having to install it inline.
     "types-PyYAML",