diff --git a/requirements.txt b/requirements.txt
index 0d40b16342..16850d436f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ pycountry==22.3.5
 NumPy==1.24.4
 Matplotlib==3.7.2
 holidays==0.29
-Tornado==6.3.2
+Tornado==6.5.5
 # security plugin
 PyCryptodome==3.18.0
 # xbrlDB plugin