diff --git a/requirements.txt b/requirements.txt
index 1a099749..a6c7b35e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ click==8.1.7
 coverage==7.4.3
 freezegun==1.4.0
 ical==7.0.0
-mypy==1.8.0
+mypy==1.9.0
 pdoc==14.4.0
 pre-commit==3.6.2
 pydantic==2.6.3