diff --git a/DEPS b/DEPS
index 02edf38fba91..9b7a49727145 100644
--- a/DEPS
+++ b/DEPS
@@ -2,7 +2,7 @@ gclient_gn_args_from = 'src'
 
 vars = {
   'chromium_version':
-    '126.0.6478.36',
+    '126.0.6478.55',
   'node_version':
     'v20.14.0',
   'nan_version':
diff --git a/patches/chromium/allow_disabling_blink_scheduler_throttling_per_renderview.patch b/patches/chromium/allow_disabling_blink_scheduler_throttling_per_renderview.patch
index 6a40b34d63b7..7449ce490037 100644
--- a/patches/chromium/allow_disabling_blink_scheduler_throttling_per_renderview.patch
+++ b/patches/chromium/allow_disabling_blink_scheduler_throttling_per_renderview.patch
@@ -51,7 +51,7 @@ index 5b4e90e2a9293f6d59e92b16bd461500f8188cc7..b69f66e5cf009a340766c355d9ceea89
    void SendRendererPreferencesToRenderer(
        const blink::RendererPreferences& preferences);
 diff --git a/content/browser/renderer_host/render_widget_host_view_aura.cc b/content/browser/renderer_host/render_widget_host_view_aura.cc
-index 37e34ba4101c894cce1deb71496e9381c72109b9..2861ffe21c42a2d3c9c49a035efda5c318c09794 100644
+index 86c755796f215d3655648af4fa7a6e4eaabd109a..3c9b0864b2b96f6103b0661db3488e970b2886e1 100644
 --- a/content/browser/renderer_host/render_widget_host_view_aura.cc
 +++ b/content/browser/renderer_host/render_widget_host_view_aura.cc
 @@ -570,8 +570,8 @@ void RenderWidgetHostViewAura::ShowImpl(PageVisibilityState page_visibility) {
diff --git a/patches/chromium/disable_hidden.patch b/patches/chromium/disable_hidden.patch
index 9411acbf2c98..ef111b0f9ef2 100644
--- a/patches/chromium/disable_hidden.patch
+++ b/patches/chromium/disable_hidden.patch
@@ -33,7 +33,7 @@ index dee4fb6b7928565da758fdfb137a5e0a88f57eaf..f6b6c19a87ee180bdc189aec3f37966b
    void StartDragging(blink::mojom::DragDataPtr drag_data,
                       const url::Origin& source_origin,
 diff --git a/content/browser/renderer_host/render_widget_host_view_aura.cc b/content/browser/renderer_host/render_widget_host_view_aura.cc
-index 52b6f6dc24bfc7b35584ef876c427b4cdf2967d0..37e34ba4101c894cce1deb71496e9381c72109b9 100644
+index 66a06bba31b247ed6f07c5de494aab42f8f1a317..86c755796f215d3655648af4fa7a6e4eaabd109a 100644
 --- a/content/browser/renderer_host/render_widget_host_view_aura.cc
 +++ b/content/browser/renderer_host/render_widget_host_view_aura.cc
 @@ -634,7 +634,7 @@ void RenderWidgetHostViewAura::HideImpl() {
diff --git a/patches/chromium/fix_move_autopipsettingshelper_behind_branding_buildflag.patch b/patches/chromium/fix_move_autopipsettingshelper_behind_branding_buildflag.patch
index af7c0cf7aac5..91e869d49eb7 100644
--- a/patches/chromium/fix_move_autopipsettingshelper_behind_branding_buildflag.patch
+++ b/patches/chromium/fix_move_autopipsettingshelper_behind_branding_buildflag.patch
@@ -75,11 +75,11 @@ index ceced82cbd23b2dcd7fabf7d63028423f86e05c3..27d0b61a7b67d1c9d7e0699e287b7833
  
  PictureInPictureOcclusionTracker*
 diff --git a/chrome/browser/ui/views/overlay/video_overlay_window_views.cc b/chrome/browser/ui/views/overlay/video_overlay_window_views.cc
-index ecabd4e26fa4eca960cdd890d6b174d1505471a7..9224005d825ce4095c47c367b45a5de1569e2aca 100644
+index 17fa3113a60ce0a2feeeba1c719433dec37b2297..5c8f529112e182be044a08dd9d7725260a4010fc 100644
 --- a/chrome/browser/ui/views/overlay/video_overlay_window_views.cc
 +++ b/chrome/browser/ui/views/overlay/video_overlay_window_views.cc
-@@ -344,11 +344,13 @@ std::unique_ptr<VideoOverlayWindowViews> VideoOverlayWindowViews::Create(
-       input_scope);
+@@ -343,11 +343,13 @@ std::unique_ptr<VideoOverlayWindowViews> VideoOverlayWindowViews::Create(
+   }
  #endif  // BUILDFLAG(IS_WIN)
  
 +#if 0
diff --git a/patches/chromium/fix_on-screen-keyboard_hides_on_input_blur_in_webview.patch b/patches/chromium/fix_on-screen-keyboard_hides_on_input_blur_in_webview.patch
index 753dd705df03..cd9d3c9bc4b6 100644
--- a/patches/chromium/fix_on-screen-keyboard_hides_on_input_blur_in_webview.patch
+++ b/patches/chromium/fix_on-screen-keyboard_hides_on_input_blur_in_webview.patch
@@ -9,10 +9,10 @@ focus node change via TextInputManager.
 chromium-bug: https://crbug.com/1369605
 
 diff --git a/content/browser/renderer_host/render_widget_host_view_aura.cc b/content/browser/renderer_host/render_widget_host_view_aura.cc
-index 2861ffe21c42a2d3c9c49a035efda5c318c09794..c0522443fbd47dae6fb63b514541d7492142915d 100644
+index 3c9b0864b2b96f6103b0661db3488e970b2886e1..1bd1fab18f8ec400e81f23030c219117577b14fd 100644
 --- a/content/browser/renderer_host/render_widget_host_view_aura.cc
 +++ b/content/browser/renderer_host/render_widget_host_view_aura.cc
-@@ -2942,6 +2942,12 @@ void RenderWidgetHostViewAura::OnTextSelectionChanged(
+@@ -2943,6 +2943,12 @@ void RenderWidgetHostViewAura::OnTextSelectionChanged(
    }
  }
  
diff --git a/patches/chromium/picture-in-picture.patch b/patches/chromium/picture-in-picture.patch
index a1e6a5e623f4..d947ae4528ba 100644
--- a/patches/chromium/picture-in-picture.patch
+++ b/patches/chromium/picture-in-picture.patch
@@ -39,7 +39,7 @@ index 0d38b25bcb43f0bbedc1e71508e840a862c28a3c..94a36af528dfa220cfae6b9b1b0be131
                  ui::ImageModel::FromVectorIcon(*icon, kColorPipWindowForeground,
                                                 kCloseButtonIconSize));
 diff --git a/chrome/browser/ui/views/overlay/video_overlay_window_views.cc b/chrome/browser/ui/views/overlay/video_overlay_window_views.cc
-index f94dc33f7ffbc13fd9846c5b62f5de3ac80d03ba..ecabd4e26fa4eca960cdd890d6b174d1505471a7 100644
+index 4e0b90c70b4b9ad3884b0e8e99c7bdb3476c18da..17fa3113a60ce0a2feeeba1c719433dec37b2297 100644
 --- a/chrome/browser/ui/views/overlay/video_overlay_window_views.cc
 +++ b/chrome/browser/ui/views/overlay/video_overlay_window_views.cc
 @@ -17,9 +17,11 @@