Clean up header dependency.
diff --git a/source/binary.cpp b/source/binary.cpp
index c8b7c38..689937f 100644
--- a/source/binary.cpp
+++ b/source/binary.cpp
@@ -20,13 +20,14 @@
 #include <iterator>
 #include <limits>
 #include <unordered_map>
+#include <vector>
 
 #include "assembly_grammar.h"
 #include "diagnostic.h"
 #include "ext_inst.h"
 #include "opcode.h"
 #include "operand.h"
-#include "spirv-tools/libspirv.h"
+#include "spirv/1.1/spirv.h"
 #include "spirv_constant.h"
 #include "spirv_endian.h"