diff --git a/tools/gn/BUILD.gn b/tools/gn/BUILD.gn
index 1461a79..f65073d 100644
--- a/tools/gn/BUILD.gn
+++ b/tools/gn/BUILD.gn
@@ -41,6 +41,7 @@
     "command_clean.cc",
     "command_desc.cc",
     "command_format.cc",
+    "command_format.h",
     "command_gen.cc",
     "command_help.cc",
     "command_ls.cc",