diff --git a/requirements.txt b/requirements.txt
index e90047a..cc1b887 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-tornado==6.4
+tornado==6.4.1
 isodate==0.6.1
 pytest==8.1.1
 schwifty==2024.1.1.post0