diff --git a/BUILD.gn b/BUILD.gn
index 489f66b115..a844fba9f2 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -393,10 +393,12 @@ static_library("spvtools") {
     "source/util/hex_float.h",
     "source/util/ilist.h",
     "source/util/ilist_node.h",
+    "source/util/index_range.h",
     "source/util/make_unique.h",
     "source/util/parse_number.cpp",
     "source/util/parse_number.h",
     "source/util/small_vector.h",
+    "source/util/span.h",
     "source/util/string_utils.cpp",
     "source/util/string_utils.h",
     "source/util/timer.cpp",