diff --git a/src/lib/base/Log.cpp b/src/lib/base/Log.cpp
index 066735e38..90f3431ea 100644
--- a/src/lib/base/Log.cpp
+++ b/src/lib/base/Log.cpp
@@ -23,10 +23,11 @@
 #include "base/log_outputters.h"
 #include "common/Version.h"
 
+#include <cstdint>
 #include <cstdio>
 #include <cstring>
 #include <iostream>
-#include <ctime> 
+#include <ctime>
 
 // names of priorities
 static const char*        g_priority[] = {
diff --git a/src/lib/base/String.cpp b/src/lib/base/String.cpp
index 2dc3695ab..bf6c2758e 100644
--- a/src/lib/base/String.cpp
+++ b/src/lib/base/String.cpp
@@ -21,6 +21,7 @@
 #include "common/stdvector.h"
 
 #include <cctype>
+#include <cstdint>
 #include <cstdio>
 #include <cstdlib>
 #include <cstring>
diff --git a/src/lib/synergy/IKeyState.cpp b/src/lib/synergy/IKeyState.cpp
index 4abb842ec..4b21fcb9f 100644
--- a/src/lib/synergy/IKeyState.cpp
+++ b/src/lib/synergy/IKeyState.cpp
@@ -19,6 +19,7 @@
 #include "synergy/IKeyState.h"
 #include "base/EventQueue.h"
 
+#include <cstdint>
 #include <cstring>
 #include <cstdlib>