diff --git a/extension/include/boost/di/extension/providers/mocks_provider.hpp b/extension/include/boost/di/extension/providers/mocks_provider.hpp
index 4701bc00d..59299edb3 100644
--- a/extension/include/boost/di/extension/providers/mocks_provider.hpp
+++ b/extension/include/boost/di/extension/providers/mocks_provider.hpp
@@ -10,6 +10,7 @@
 #include <functional>
 #include <memory>
 #include <typeindex>
+#include <type_traits>
 #include <unordered_map>
 
 #include "boost/di.hpp"