diff --git a/avs_core/core/avisynth.cpp b/avs_core/core/avisynth.cpp
index c66d39e..5bc61a3 100644
--- a/avs_core/core/avisynth.cpp
+++ b/avs_core/core/avisynth.cpp
@@ -45,6 +45,7 @@
 #include "FilterConstructor.h"
 #include "PluginManager.h"
 #include "MappedList.h"
+#include <chrono>
 #include <vector>
 #include <iostream>
 #include <fstream>
diff --git a/avs_core/core/cache.cpp b/avs_core/core/cache.cpp
index 76eb7cf..957e102 100644
--- a/avs_core/core/cache.cpp
+++ b/avs_core/core/cache.cpp
@@ -38,6 +38,7 @@
 #include "InternalEnvironment.h"
 #include "DeviceManager.h"
 #include <cassert>
+#include <chrono>
 #include <cstdio>
 
 #ifdef X86_32