diff --git a/hypervector/requirements.lock.txt b/hypervector/requirements.lock.txt
index 08cd7e2..85692b2 100644
--- a/hypervector/requirements.lock.txt
+++ b/hypervector/requirements.lock.txt
@@ -88,7 +88,7 @@ textwrap3==0.9.2
 threadpoolctl==2.2.0
 toml==0.10.2
 tomli==1.2.1
-tornado==6.1
+tornado==6.3.3
 tqdm==4.62.2
 traitlets==5.1.0
 typing-extensions==3.10.0.2