diff --git a/browser_patches/firefox-beta/BUILD_NUMBER b/browser_patches/firefox-beta/BUILD_NUMBER
index ae93b691ab..b901c5b478 100644
--- a/browser_patches/firefox-beta/BUILD_NUMBER
+++ b/browser_patches/firefox-beta/BUILD_NUMBER
@@ -1,2 +1,2 @@
-1287
-Changed: lushnikov@chromium.org Wed 01 Sep 2021 03:05:22 AM PDT
+1288
+Changed: max@schmitt.mx Fri  3 Sep 2021 16:41:51 CEST
diff --git a/browser_patches/firefox-beta/juggler/NetworkObserver.js b/browser_patches/firefox-beta/juggler/NetworkObserver.js
index 951e15770a..b9866d2b32 100644
--- a/browser_patches/firefox-beta/juggler/NetworkObserver.js
+++ b/browser_patches/firefox-beta/juggler/NetworkObserver.js
@@ -729,6 +729,7 @@ class NetworkRequest {
         requestId: this.requestId,
         responseEndTime: httpChannel.responseEndTime,
         transferSize: httpChannel.transferSize,
+        protocolVersion: httpChannel.protocolVersion,
       }, this._frameId);
     }
     this._networkObserver._channelToRequest.delete(httpChannel);
diff --git a/browser_patches/firefox-beta/juggler/protocol/Protocol.js b/browser_patches/firefox-beta/juggler/protocol/Protocol.js
index 1efc2c8f0a..33dcb41b64 100644
--- a/browser_patches/firefox-beta/juggler/protocol/Protocol.js
+++ b/browser_patches/firefox-beta/juggler/protocol/Protocol.js
@@ -508,6 +508,7 @@ const Network = {
       requestId: t.String,
       responseEndTime: t.Number,
       transferSize: t.Number,
+      protocolVersion: t.String,
     },
     'requestFailed': {
       requestId: t.String,
diff --git a/browser_patches/firefox/BUILD_NUMBER b/browser_patches/firefox/BUILD_NUMBER
index 5a7ad424f6..4b827c73a0 100644
--- a/browser_patches/firefox/BUILD_NUMBER
+++ b/browser_patches/firefox/BUILD_NUMBER
@@ -1,2 +1,2 @@
-1290
-Changed: lushnikov@chromium.org Wed 01 Sep 2021 03:10:46 AM PDT
+1291
+Changed: max@schmitt.mx Fri  3 Sep 2021 16:40:48 CEST
diff --git a/browser_patches/firefox/juggler/NetworkObserver.js b/browser_patches/firefox/juggler/NetworkObserver.js
index 951e15770a..b9866d2b32 100644
--- a/browser_patches/firefox/juggler/NetworkObserver.js
+++ b/browser_patches/firefox/juggler/NetworkObserver.js
@@ -729,6 +729,7 @@ class NetworkRequest {
         requestId: this.requestId,
         responseEndTime: httpChannel.responseEndTime,
         transferSize: httpChannel.transferSize,
+        protocolVersion: httpChannel.protocolVersion,
       }, this._frameId);
     }
     this._networkObserver._channelToRequest.delete(httpChannel);
diff --git a/browser_patches/firefox/juggler/protocol/Protocol.js b/browser_patches/firefox/juggler/protocol/Protocol.js
index 1efc2c8f0a..33dcb41b64 100644
--- a/browser_patches/firefox/juggler/protocol/Protocol.js
+++ b/browser_patches/firefox/juggler/protocol/Protocol.js
@@ -508,6 +508,7 @@ const Network = {
       requestId: t.String,
       responseEndTime: t.Number,
       transferSize: t.Number,
+      protocolVersion: t.String,
     },
     'requestFailed': {
       requestId: t.String,