diff --git a/archive_api_server/requirements.txt b/archive_api_server/requirements.txt
index 076f073..605572b 100644
--- a/archive_api_server/requirements.txt
+++ b/archive_api_server/requirements.txt
@@ -1,3 +1,3 @@
 psycopg2-binary==2.8.2
 queries==2.0.1
-tornado==6.0.2
+tornado==6.3.3