diff --git a/src/cpp/tools/FileLock.h b/src/cpp/tools/FileLock.h
index fb6ae1b1..d3df2a3a 100644
--- a/src/cpp/tools/FileLock.h
+++ b/src/cpp/tools/FileLock.h
@@ -1,7 +1,7 @@
 #pragma once
 
 #include "rir_config.h"
-
+#include <string>
 #include <mutex>
 
 namespace rir
diff --git a/src/cpp/tools/Log.cpp b/src/cpp/tools/Log.cpp
index 49cc9ad1..6e3ba233 100644
--- a/src/cpp/tools/Log.cpp
+++ b/src/cpp/tools/Log.cpp
@@ -2,6 +2,7 @@
 
 #include <cstdio>
 #include <cstring>
+#include <string>
 #include <mutex>
 
 namespace rir