diff --git a/BUILD.gn b/BUILD.gn
index deedf82..6dced15 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -1679,6 +1679,7 @@ v8_header_set("v8_headers") {

   sources = [
     "include/v8.h",
+    "include/wasm-v8-lowlevel.hh",
     "include/v8config.h",
   ]

@@ -2007,6 +2008,7 @@ v8_source_set("v8_base") {
     "include/v8-testing.h",
     "include/v8-util.h",
     "include/v8.h",
+    "include/wasm-v8-lowlevel.hh",
     "include/v8config.h",
     "src/accessors.cc",
     "src/accessors.h",
@@ -2020,6 +2022,7 @@ v8_source_set("v8_base") {
     "src/api/api-natives.h",
     "src/api/api.cc",
     "src/api/api.h",
+    "src/wasm-v8-lowlevel.cc",
     "src/asmjs/asm-js.cc",
     "src/asmjs/asm-js.h",
     "src/asmjs/asm-names.h",