diff --git a/src/util/regex/regex-backref-manager.hpp b/src/util/regex/regex-backref-manager.hpp
index 9ca95ea..a87640c 100644
--- a/src/util/regex/regex-backref-manager.hpp
+++ b/src/util/regex/regex-backref-manager.hpp
@@ -17,6 +17,8 @@
 
 #include "../../common.hpp"
 
+#include <vector>
+
 namespace ndn {
 
 class RegexMatcher;