diff --git a/Meta/gn/secondary/Userland/Libraries/LibWeb/DOM/BUILD.gn b/Meta/gn/secondary/Userland/Libraries/LibWeb/DOM/BUILD.gn
index 36f843a120..3f8a1ff87c 100644
--- a/Meta/gn/secondary/Userland/Libraries/LibWeb/DOM/BUILD.gn
+++ b/Meta/gn/secondary/Userland/Libraries/LibWeb/DOM/BUILD.gn
@@ -6,6 +6,7 @@ source_set("DOM") {
     "AbortSignal.cpp",
     "AbstractRange.cpp",
     "AccessibilityTreeNode.cpp",
+    "AdoptedStyleSheets.cpp",
     "Attr.cpp",
     "CDATASection.cpp",
     "CharacterData.cpp",
diff --git a/Meta/gn/secondary/Userland/Libraries/LibWeb/WebIDL/BUILD.gn b/Meta/gn/secondary/Userland/Libraries/LibWeb/WebIDL/BUILD.gn
index 46a2f2916f..e2bb3768c1 100644
--- a/Meta/gn/secondary/Userland/Libraries/LibWeb/WebIDL/BUILD.gn
+++ b/Meta/gn/secondary/Userland/Libraries/LibWeb/WebIDL/BUILD.gn
@@ -6,6 +6,7 @@ source_set("WebIDL") {
     "Buffers.cpp",
     "CallbackType.cpp",
     "DOMException.cpp",
+    "ObservableArray.cpp",
     "OverloadResolution.cpp",
     "Promise.cpp",
   ]