diff --git a/auth/requirements.txt b/auth/requirements.txt
index 98e8af920..ae360eccb 100644
--- a/auth/requirements.txt
+++ b/auth/requirements.txt
@@ -1,6 +1,6 @@
 SQLAlchemy==1.3.24
 mysql-connector-python==8.1.0
-tornado==6.3.3
+tornado==6.4.1
 alembic==1.13.1
 pymacaroons==0.9.2
 ordered-set==4.1.0
diff --git a/bumischeduler/requirements.txt b/bumischeduler/requirements.txt
index b89dd9dac..08889b735 100644
--- a/bumischeduler/requirements.txt
+++ b/bumischeduler/requirements.txt
@@ -1,4 +1,4 @@
-tornado==6.3.3
+tornado==6.4.1
 kombu==5.3.4
 # OptScale packages
 -e optscale_client/config_client
diff --git a/diproxy/requirements.txt b/diproxy/requirements.txt
index 253e56862..483cc2998 100644
--- a/diproxy/requirements.txt
+++ b/diproxy/requirements.txt
@@ -1,4 +1,4 @@
-tornado==6.3.3
+tornado==6.4.1
 requests==2.31.0
 async_lru==1.0.3
 apispec==6.3.1
diff --git a/docker_images/ohsu/requirements.txt b/docker_images/ohsu/requirements.txt
index 0d31286aa..2641b1246 100644
--- a/docker_images/ohsu/requirements.txt
+++ b/docker_images/ohsu/requirements.txt
@@ -1,5 +1,5 @@
 boto
-tornado==6.3.3
+tornado==6.4.1
 
 # OptScale packages
 -e tools/optscale_exceptions
diff --git a/herald/requirements.txt b/herald/requirements.txt
index d40445369..b4a578139 100644
--- a/herald/requirements.txt
+++ b/herald/requirements.txt
@@ -1,5 +1,5 @@
 SQLAlchemy==1.3.24
-tornado==6.3.3
+tornado==6.4.1
 requests==2.31.0
 netaddr==0.8.0
 alembic==1.13.1
diff --git a/insider/insider_api/requirements.txt b/insider/insider_api/requirements.txt
index 61fa44211..0dff1ba7c 100644
--- a/insider/insider_api/requirements.txt
+++ b/insider/insider_api/requirements.txt
@@ -1,4 +1,4 @@
-tornado==6.3.3
+tornado==6.4.1
 pymongo==4.6.3
 apispec==6.3.1
 pyyaml==6.0.1
diff --git a/jira_bus/requirements.txt b/jira_bus/requirements.txt
index 53da7f1e7..553f63983 100644
--- a/jira_bus/requirements.txt
+++ b/jira_bus/requirements.txt
@@ -1,4 +1,4 @@
-tornado==6.3.3
+tornado==6.4.1
 sqlalchemy==1.4.23
 alembic==1.13.1
 mysql-connector==2.2.9
diff --git a/katara/katara_service/requirements.txt b/katara/katara_service/requirements.txt
index 60a8f9014..f49ae0b8c 100644
--- a/katara/katara_service/requirements.txt
+++ b/katara/katara_service/requirements.txt
@@ -1,6 +1,6 @@
 SQLAlchemy==1.3.24
 mysql-connector-python==8.1.0
-tornado==6.3.3
+tornado==6.4.1
 alembic==1.13.1
 croniter==0.3.15
 kombu==5.3.4
diff --git a/keeper/requirements.txt b/keeper/requirements.txt
index b4dbc551f..73ddcb341 100644
--- a/keeper/requirements.txt
+++ b/keeper/requirements.txt
@@ -1,4 +1,4 @@
-tornado==6.3.3
+tornado==6.4.1
 pymongo==4.6.3
 mongoengine==0.27.0
 requests==2.31.0
diff --git a/metroculus/metroculus_api/requirements.txt b/metroculus/metroculus_api/requirements.txt
index 14e227325..807146e30 100644
--- a/metroculus/metroculus_api/requirements.txt
+++ b/metroculus/metroculus_api/requirements.txt
@@ -1,4 +1,4 @@
-tornado==6.3.3
+tornado==6.4.1
 apispec==6.3.1
 pymongo==4.6.3
 clickhouse-driver==0.2.6
diff --git a/pharos_backend/pharos_receiver/requirements.txt b/pharos_backend/pharos_receiver/requirements.txt
index eddbcfe90..cf0588c4e 100644
--- a/pharos_backend/pharos_receiver/requirements.txt
+++ b/pharos_backend/pharos_receiver/requirements.txt
@@ -1,5 +1,5 @@
 boto3==1.34.7
-tornado==6.3.3
+tornado==6.4.1
 kombu==5.3.4
 
 # OptScale packages
diff --git a/rest_api/requirements.txt b/rest_api/requirements.txt
index d9ba42269..93eedde45 100644
--- a/rest_api/requirements.txt
+++ b/rest_api/requirements.txt
@@ -1,6 +1,6 @@
 SQLAlchemy==1.3.24
 mysql-connector-python==8.1.0
-tornado==6.3.3
+tornado==6.4.1
 alembic==1.13.1
 cryptography==42.0.4
 apispec==6.3.1
diff --git a/slacker/requirements.txt b/slacker/requirements.txt
index 2a71775a5..aa524523b 100644
--- a/slacker/requirements.txt
+++ b/slacker/requirements.txt
@@ -1,4 +1,4 @@
-tornado==6.3.3
+tornado==6.4.1
 slack_bolt==1.18.1
 slack_sdk==3.27.1
 sqlalchemy==1.4.52
diff --git a/tools/optscale_exceptions/setup.py b/tools/optscale_exceptions/setup.py
index b3895c240..6b9830e5a 100644
--- a/tools/optscale_exceptions/setup.py
+++ b/tools/optscale_exceptions/setup.py
@@ -3,7 +3,7 @@
 from setuptools import setup
 
 
-requirements = ['tornado==6.3.3', 'requests==2.31.0']
+requirements = ['tornado==6.4.1', 'requests==2.31.0']
 
 setup(name='optscale-exceptions',
       description='OptScale Exceptions',