diff --git a/src/uvw/dns.hpp b/src/uvw/dns.hpp
index ddfe678d..cf5d4961 100644
--- a/src/uvw/dns.hpp
+++ b/src/uvw/dns.hpp
@@ -3,6 +3,7 @@
 
 #include <utility>
 #include <memory>
+#include <string>
 #include <uv.h>
 #include "event.hpp"
 #include "request.hpp"
diff --git a/src/uvw/process.hpp b/src/uvw/process.hpp
index e04c557a..b2dfa7cf 100644
--- a/src/uvw/process.hpp
+++ b/src/uvw/process.hpp
@@ -3,6 +3,7 @@
 
 #include <utility>
 #include <memory>
+#include <string>
 #include <uv.h>
 #include "event.hpp"
 #include "handle.hpp"