diff --git a/Meta/gn/secondary/Userland/Libraries/LibJS/BUILD.gn b/Meta/gn/secondary/Userland/Libraries/LibJS/BUILD.gn
index 6e06885c3ee..b24e806e11e 100644
--- a/Meta/gn/secondary/Userland/Libraries/LibJS/BUILD.gn
+++ b/Meta/gn/secondary/Userland/Libraries/LibJS/BUILD.gn
@@ -35,6 +35,7 @@ shared_library("LibJS") {
     "Bytecode/Interpreter.cpp",
     "Bytecode/Label.cpp",
     "Bytecode/RegexTable.cpp",
+    "Bytecode/ScopedOperand.cpp",
     "Bytecode/StringTable.cpp",
     "Console.cpp",
     "Contrib/Test262/262Object.cpp",
diff --git a/Meta/gn/secondary/Userland/Libraries/LibWeb/CSS/BUILD.gn b/Meta/gn/secondary/Userland/Libraries/LibWeb/CSS/BUILD.gn
index 79321c87fd3..a2f73aeafe3 100644
--- a/Meta/gn/secondary/Userland/Libraries/LibWeb/CSS/BUILD.gn
+++ b/Meta/gn/secondary/Userland/Libraries/LibWeb/CSS/BUILD.gn
@@ -32,6 +32,7 @@ source_set("CSS") {
     "EdgeRect.cpp",
     "Flex.cpp",
     "FontFace.cpp",
+    "FontFaceSet.cpp",
     "Frequency.cpp",
     "GridTrackPlacement.cpp",
     "GridTrackSize.cpp",
@@ -41,6 +42,7 @@ source_set("CSS") {
     "MediaQuery.cpp",
     "MediaQueryList.cpp",
     "MediaQueryListEvent.cpp",
+    "ParsedFontFace.cpp",
     "PercentageOr.cpp",
     "PreferredColorScheme.cpp",
     "Ratio.cpp",
diff --git a/Meta/gn/secondary/Userland/Libraries/LibWeb/idl_files.gni b/Meta/gn/secondary/Userland/Libraries/LibWeb/idl_files.gni
index 60bc05dcdba..2706f3be06e 100644
--- a/Meta/gn/secondary/Userland/Libraries/LibWeb/idl_files.gni
+++ b/Meta/gn/secondary/Userland/Libraries/LibWeb/idl_files.gni
@@ -45,6 +45,8 @@ standard_idl_files = [
   "//Userland/Libraries/LibWeb/CSS/CSSStyleRule.idl",
   "//Userland/Libraries/LibWeb/CSS/CSSStyleSheet.idl",
   "//Userland/Libraries/LibWeb/CSS/CSSSupportsRule.idl",
+  "//Userland/Libraries/LibWeb/CSS/FontFace.idl",
+  "//Userland/Libraries/LibWeb/CSS/FontFaceSet.idl",
   "//Userland/Libraries/LibWeb/CSS/MediaList.idl",
   "//Userland/Libraries/LibWeb/CSS/MediaQueryList.idl",
   "//Userland/Libraries/LibWeb/CSS/MediaQueryListEvent.idl",