diff --git a/requirements/base.txt b/requirements/base.txt
index 0a5534ad38..7b3d6c2c6d 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -492,7 +492,7 @@ tinycss2==1.1.0
     #   bleach
     #   cssselect2
     #   weasyprint
-tornado==6.4.1
+tornado==6.4.2
     # via flower
 typing-extensions==4.11.0
     # via
diff --git a/requirements/ci.txt b/requirements/ci.txt
index 218c7d237c..927bd1d811 100644
--- a/requirements/ci.txt
+++ b/requirements/ci.txt
@@ -979,7 +979,7 @@ tinycss2==1.1.0
     #   -r requirements/base.txt
     #   cssselect2
     #   weasyprint
-tornado==6.4.1
+tornado==6.4.2
     # via
     #   -c requirements/base.txt
     #   -r requirements/base.txt
diff --git a/requirements/dev.txt b/requirements/dev.txt
index 943b4bc502..d2da8b9223 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -1125,7 +1125,7 @@ tinycss2==1.1.0
     #   weasyprint
 toml==0.10.2
     # via autopep8
-tornado==6.4.1
+tornado==6.4.2
     # via
     #   -c requirements/ci.txt
     #   -r requirements/ci.txt
diff --git a/requirements/extensions.txt b/requirements/extensions.txt
index 8405c67cf2..f16435d911 100644
--- a/requirements/extensions.txt
+++ b/requirements/extensions.txt
@@ -853,7 +853,7 @@ tinycss2==1.1.0
     #   -r requirements/base.txt
     #   cssselect2
     #   weasyprint
-tornado==6.4.1
+tornado==6.4.2
     # via
     #   -c requirements/base.txt
     #   -r requirements/base.txt
diff --git a/requirements/type-checking.txt b/requirements/type-checking.txt
index 97f56c7df5..77a3d13e29 100644
--- a/requirements/type-checking.txt
+++ b/requirements/type-checking.txt
@@ -1107,7 +1107,7 @@ tinycss2==1.1.0
     #   -r requirements/ci.txt
     #   cssselect2
     #   weasyprint
-tornado==6.4.1
+tornado==6.4.2
     # via
     #   -c requirements/ci.txt
     #   -r requirements/ci.txt