diff --git a/deps/chakrashim/include/libplatform/v8-tracing.h b/deps/chakrashim/include/libplatform/v8-tracing.h
index ed29791fbdd..1a7cf16eb83 100644
--- a/deps/chakrashim/include/libplatform/v8-tracing.h
+++ b/deps/chakrashim/include/libplatform/v8-tracing.h
@@ -7,7 +7,9 @@
 
 #include <fstream>
 #include <memory>
+#include <unordered_set>
 #include <vector>
+
 #include "v8-platform.h"
 
 namespace v8 {
diff --git a/deps/chakrashim/include/v8-platform.h b/deps/chakrashim/include/v8-platform.h
index 7dd3eba67b1..f0648e8bcd0 100644
--- a/deps/chakrashim/include/v8-platform.h
+++ b/deps/chakrashim/include/v8-platform.h
@@ -192,8 +192,9 @@ class Platform {
 
  protected:
   static double SystemClockTimeMillis() {
-    return std::chrono::duration_cast<std::chrono::milliseconds>(
-        std::chrono::system_clock::now().time_since_epoch()).count();
+    return std::chrono::duration_cast<
+        std::chrono::duration<double, std::milli>>(
+            std::chrono::system_clock::now().time_since_epoch()).count();
   }
 };