diff --git a/constraints/ci.txt b/constraints/ci.txt
index b9a01c8..6653c4d 100644
--- a/constraints/ci.txt
+++ b/constraints/ci.txt
@@ -3,4 +3,4 @@
 # sibling tools).
 pytest==9.1.1
 ruff==0.16.1
-mypy==2.3.0
+mypy==2.4.0