diff --git a/requirements.txt b/requirements.txt
index 6d94aec..91126cd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 colorama==0.4.3
 gitignore-parser==0.0.6
 lark-parser==0.9.0
-tornado==6.0.4
+tornado==6.3.3