diff --git a/test/hash_range_test.cpp b/test/hash_range_test.cpp
index 9e2f1bb..0969efc 100644
--- a/test/hash_range_test.cpp
+++ b/test/hash_range_test.cpp
@@ -20,6 +20,7 @@
 #include <boost/limits.hpp>
 #include <boost/mpl/assert.hpp>
 #include <boost/type_traits/is_base_and_derived.hpp>
+#include <vector>
 
 void hash_range_tests()
 {
diff --git a/test/hash_string_test.cpp b/test/hash_string_test.cpp
index 9a6d0a3..0e8c60f 100644
--- a/test/hash_string_test.cpp
+++ b/test/hash_string_test.cpp
@@ -16,6 +16,7 @@
 #include <boost/limits.hpp>
 #include <boost/mpl/assert.hpp>
 #include <boost/type_traits/is_base_and_derived.hpp>
+#include <string>
 
 #include "./compile_time.hpp"