diff --git a/src/PlatformSocket_p.h b/src/PlatformSocket_p.h
index f2dbd1c..b0f8ca7 100644
--- a/src/PlatformSocket_p.h
+++ b/src/PlatformSocket_p.h
@@ -21,6 +21,7 @@
 
 #include <memory>
 #include <string>
+#include <cstdint>
 
 namespace Arcus
 {
diff --git a/src/Types.h b/src/Types.h
index ac55c0e..50320dc 100644
--- a/src/Types.h
+++ b/src/Types.h
@@ -21,6 +21,7 @@
 
 #include <string>
 #include <memory>
+#include <cstdint>
 
 namespace google
 {