diff --git a/requirements-lint.txt b/requirements-lint.txt
index 56956dc..62dd24f 100644
--- a/requirements-lint.txt
+++ b/requirements-lint.txt
@@ -7,4 +7,4 @@
 # and land it the same way: by deliberate human decision after reading the
 # diff (CLAUDE.md rule 1). Neither tool is needed to run Bench.
 ruff==0.15.14
-mypy==2.3.1
+mypy==2.4.0