diff --git a/pyproject.toml b/pyproject.toml
index 031c7b3..32703a1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -31,6 +31,7 @@ classifiers = [
 
 dependencies = [
     "flask>=3.0.0",
+    "flask-socketio>=5.3.0",
     "pyyaml>=6.0",
     "bleak>=0.21.0",
     "requests>=2.28.0",