diff --git a/requirements.txt b/requirements.txt
index 5c9a28e..075f1f0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
 PyQt5==5.15.9
+PyQtWebEngine==5.15.6
 pyserial==3.5
 pyqtgraph==0.13.3