diff --git a/include/spdlog/stopwatch.h b/include/spdlog/stopwatch.h
index 4e62259b..5d1f2dc5 100644
--- a/include/spdlog/stopwatch.h
+++ b/include/spdlog/stopwatch.h
@@ -4,6 +4,7 @@
 #pragma once
 
 #include <spdlog/fmt/fmt.h>
+#include <chrono>
 
 // Stopwatch support for spdlog  (using std::chrono::steady_clock).
 // Displays elapsed seconds since construction as double.