diff --git a/Meta/gn/secondary/Ladybird/BUILD.gn b/Meta/gn/secondary/Ladybird/BUILD.gn
index 2b6ed89fd42..1ca9072e6b2 100644
--- a/Meta/gn/secondary/Ladybird/BUILD.gn
+++ b/Meta/gn/secondary/Ladybird/BUILD.gn
@@ -20,6 +20,7 @@ moc_qt_objects("generate_moc") {
     "Qt/LocationEdit.h",
     "Qt/SettingsDialog.h",
     "Qt/Tab.h",
+    "Qt/TaskManagerWindow.h",
     "Qt/WebContentView.h",
   ]
 }
@@ -95,6 +96,7 @@ executable("ladybird_executable") {
       "Qt/StringUtils.cpp",
       "Qt/TVGIconEngine.cpp",
       "Qt/Tab.cpp",
+      "Qt/TaskManagerWindow.cpp",
       "Qt/WebContentView.cpp",
       "Qt/main.cpp",
     ]
@@ -212,6 +214,7 @@ fonts = [
 
 icons_16x16 = [
   "//Base/res/icons/16x16/app-browser.png",
+  "//Base/res/icons/16x16/app-system-monitor.png",
   "//Base/res/icons/16x16/audio-volume-high.png",
   "//Base/res/icons/16x16/audio-volume-muted.png",
   "//Base/res/icons/16x16/close-tab.png",
@@ -243,6 +246,7 @@ icons_16x16 = [
 
 icons_32x32 = [
   "//Base/res/icons/32x32/app-browser.png",
+  "//Base/res/icons/32x32/app-system-monitor.png",
   "//Base/res/icons/32x32/filetype-folder.png",
   "//Base/res/icons/32x32/filetype-unknown.png",
   "//Base/res/icons/32x32/msgbox-warning.png",