diff --git a/apps/cistech-tunnel/build/Dockerfile b/apps/cistech-tunnel/build/Dockerfile
index a96a65d..bb84c40 100644
--- a/apps/cistech-tunnel/build/Dockerfile
+++ b/apps/cistech-tunnel/build/Dockerfile
@@ -67,6 +67,10 @@ RUN apt-get update && apt-get install -y \
     libxkbcommon0 \
     libxkbcommon-x11-0 \
     fonts-liberation \
+    # EGL/GL for PyQt6 WebEngine
+    libegl1 \
+    libgl1 \
+    libopengl0 \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/*