diff --git a/src/hyprpicker.hpp b/src/hyprpicker.hpp
index 77ab060..062928d 100644
--- a/src/hyprpicker.hpp
+++ b/src/hyprpicker.hpp
@@ -1,5 +1,7 @@
 #pragma once
 
+#include <mutex>
+
 #include "defines.hpp"
 #include "helpers/LayerSurface.hpp"
 #include "helpers/PoolBuffer.hpp"