diff --git a/browser_patches/firefox-beta/BUILD_NUMBER b/browser_patches/firefox-beta/BUILD_NUMBER
index b901c5b478..6c8c4f0b87 100644
--- a/browser_patches/firefox-beta/BUILD_NUMBER
+++ b/browser_patches/firefox-beta/BUILD_NUMBER
@@ -1,2 +1,2 @@
-1288
-Changed: max@schmitt.mx Fri  3 Sep 2021 16:41:51 CEST
+1289
+Changed: max@schmitt.mx Mon  6 Sep 2021 16:30:50 CEST
diff --git a/browser_patches/firefox-beta/juggler/NetworkObserver.js b/browser_patches/firefox-beta/juggler/NetworkObserver.js
index b9866d2b32..3aeb8d6b4e 100644
--- a/browser_patches/firefox-beta/juggler/NetworkObserver.js
+++ b/browser_patches/firefox-beta/juggler/NetworkObserver.js
@@ -766,7 +766,7 @@ class NetworkObserver {
             proxy.port,
             '', /* aProxyAuthorizationHeader */
             '', /* aConnectionIsolationKey */
-            0, /* aFlags */
+            Ci.nsIProxyInfo.TRANSPARENT_PROXY_RESOLVES_HOST, /* aFlags */
             UINT32_MAX, /* aFailoverTimeout */
             null, /* failover proxy */
         ));
diff --git a/browser_patches/firefox/BUILD_NUMBER b/browser_patches/firefox/BUILD_NUMBER
index 4b827c73a0..df1c2d4745 100644
--- a/browser_patches/firefox/BUILD_NUMBER
+++ b/browser_patches/firefox/BUILD_NUMBER
@@ -1,2 +1,2 @@
-1291
-Changed: max@schmitt.mx Fri  3 Sep 2021 16:40:48 CEST
+1292
+Changed: max@schmitt.mx Mon  6 Sep 2021 16:30:50 CEST
diff --git a/browser_patches/firefox/juggler/NetworkObserver.js b/browser_patches/firefox/juggler/NetworkObserver.js
index b9866d2b32..3aeb8d6b4e 100644
--- a/browser_patches/firefox/juggler/NetworkObserver.js
+++ b/browser_patches/firefox/juggler/NetworkObserver.js
@@ -766,7 +766,7 @@ class NetworkObserver {
             proxy.port,
             '', /* aProxyAuthorizationHeader */
             '', /* aConnectionIsolationKey */
-            0, /* aFlags */
+            Ci.nsIProxyInfo.TRANSPARENT_PROXY_RESOLVES_HOST, /* aFlags */
             UINT32_MAX, /* aFailoverTimeout */
             null, /* failover proxy */
         ));