diff --git a/requirements.txt b/requirements.txt
index b803341..36aad5b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-tornado==6.0.4
+tornado==6.3.3
 isodate==0.6.0
 pytest==5.4.1
 GitPython==3.1.12
\ No newline at end of file