diff --git a/pyproject.toml b/pyproject.toml
index 8c2100e..9df02db 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -52,7 +52,7 @@ dependencies = [
     "pyperclip>=1.9.0,<=1.11.0",
     "ruamel.yaml>=0.18.10,<=0.18.16",
     "sortedcontainers>=2.3,<=2.4.0",
-    "tornado>=6.5.0,<=6.5.3",
+    "tornado>=6.5.0,<=6.5.4",
     "typing-extensions>=4.13.2,<=4.14; python_version < '3.13'",
     "urwid>=2.6.14,<=3.0.4",
     "wsproto>=1.0,<=1.3.2",