diff --git a/requirements/requirements-python3.6.txt b/requirements/requirements-python3.6.txt
index 85bc3f512a6f..b3697e8b1ef2 100644
--- a/requirements/requirements-python3.6.txt
+++ b/requirements/requirements-python3.6.txt
@@ -362,7 +362,7 @@ thrift-sasl==0.4.2
 thrift==0.13.0
 toml==0.10.1
 toolz==0.10.0
-tornado==5.1.1
+tornado==6.3.3
 tqdm==4.46.0
 traitlets==4.3.3
 typed-ast==1.4.1
diff --git a/requirements/requirements-python3.7.txt b/requirements/requirements-python3.7.txt
index fc7ed0e7eca0..90cb3374a80f 100644
--- a/requirements/requirements-python3.7.txt
+++ b/requirements/requirements-python3.7.txt
@@ -357,7 +357,7 @@ thrift-sasl==0.4.2
 thrift==0.13.0
 toml==0.10.1
 toolz==0.10.0
-tornado==5.1.1
+tornado==6.3.3
 tqdm==4.46.0
 traitlets==4.3.3
 typed-ast==1.4.1