diff --git a/pyproject.toml b/pyproject.toml
index c6ce274c..e2d8b9fe 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -46,7 +46,7 @@ optional-dependencies.dev = [
     "freezegun==1.5.5",
     "furo==2025.12.19",
     "interrogate==1.7.0",
-    "mypy[faster-cache]==2.3.0",
+    "mypy[faster-cache]==2.3.1",
     "mypy-strict-kwargs==2026.7.19.1",
     "no-defaults==2.1.0",
     "prek==0.4.13",