diff --git a/src/lib/base/String.h b/src/lib/base/String.h
index 9c5a53ba..fa37f8f0 100644
--- a/src/lib/base/String.h
+++ b/src/lib/base/String.h
@@ -18,6 +18,7 @@
 
 #pragma once
 
+#include <cstdint>
 #include "common/common.h"
 #include "common/stdstring.h"
 
diff --git a/src/lib/net/FingerprintData.h b/src/lib/net/FingerprintData.h
index 938a6953..522a4813 100644
--- a/src/lib/net/FingerprintData.h
+++ b/src/lib/net/FingerprintData.h
@@ -18,6 +18,7 @@
 #ifndef BARRIER_LIB_NET_FINGERPRINT_DATA_H
 #define BARRIER_LIB_NET_FINGERPRINT_DATA_H
 
+#include <cstdint>
 #include <string>
 #include <vector>