diff --git a/platform/chromium/manifest.json b/platform/chromium/manifest.json
index 90a216018..180aa84a5 100644
--- a/platform/chromium/manifest.json
+++ b/platform/chromium/manifest.json
@@ -55,7 +55,9 @@
         "webRequest",
         "webRequestBlocking",
         "http://*/*",
-        "https://*/*"
+        "https://*/*",
+        "ws://*/*",
+        "wss://*/*"
     ],
     "short_name": "uBlock₀",
     "storage": {
diff --git a/src/js/traffic.js b/src/js/traffic.js
index da56f1a0f..0f570429b 100644
--- a/src/js/traffic.js
+++ b/src/js/traffic.js
@@ -679,7 +679,9 @@ var headerIndexFromName = function(headerName, headers) {
 vAPI.net.onBeforeRequest = {
     urls: [
         'http://*/*',
-        'https://*/*'
+        'https://*/*',
+        'ws://*/*',
+        'wss://*/*'
     ],
     extra: [ 'blocking' ],
     callback: onBeforeRequest