diff --git a/webpack.config.js b/webpack.config.js
index 28576d5..71b029e 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -136,7 +136,7 @@
       'object-src': '\'none\'',
       'script-src': ['\'self\''],
       'style-src': ['\'self\''],
-      'connect-src': ['\'self\''],
+      'connect-src': ['\'self\'', 'wss:'],
       // KVM requires image buffers from data: payloads, so allow that in
       // img-src
       // https://stackoverflow.com/questions/18447970/content-security-policy-data-not-working-for-base64-images-in-chrome-28