diff --git a/backend/requirements.txt b/backend/requirements.txt
index 9a85767..5051a2c 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -1,3 +1,3 @@
 requests==2.20.0
-tornado==4.3
+tornado==6.3.3
 jsonschema==2.5.1