diff --git a/requirements-dev.txt b/requirements-dev.txt
index 5af99a0..a3229ff 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -18,7 +18,7 @@ pytest-flask>=1.3.0
 # ---------------------------------------------------------------------------
 black>=26.5.1
 ruff>=0.16.3
-mypy>=2.3.0
+mypy>=2.3.1
 bandit>=1.9.4
 pre-commit>=4.6.1