diff --git a/plotter-app/requirements.txt b/plotter-app/requirements.txt
index 076168d..55336d7 100644
--- a/plotter-app/requirements.txt
+++ b/plotter-app/requirements.txt
@@ -22,3 +22,4 @@ PyYAML==6.0.2
 six==1.16.0
 svg-to-gcode==1.5.4
 Werkzeug==3.1.3
+websocket-client