diff --git a/main.cpp b/main.cpp
index f64591b..edbf673 100644
--- a/main.cpp
+++ b/main.cpp
@@ -11,6 +11,7 @@
 #include <mutex>
 #include <queue>
 #include <condition_variable>
+#include <atomic>
 
 #include "version.h"
 
diff --git a/version.h b/version.h
index 0e0bdd0..c6817ab 100644
--- a/version.h
+++ b/version.h
@@ -1,3 +1,3 @@
 #pragma once
 
-#define LAGUEIRTO_VERSION "2.1.0"
+#define LAGUEIRTO_VERSION "2.1.1"