diff --git a/requirements.txt b/requirements.txt
index d39534a..b8e4464 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -115,7 +115,7 @@ termcolor==1.1.0
 terminado==0.9.3
 testpath==0.4.4
 threadpoolctl==2.1.0
-tornado==6.1
+tornado==6.3.2
 tqdm==4.59.0
 traitlets==5.0.5
 typing-extensions==3.7.4.3