diff --git a/lib/karto_sdk/include/karto_sdk/Karto.h b/lib/karto_sdk/include/karto_sdk/Karto.h
index c03f67578..85d1345ce 100644
--- a/lib/karto_sdk/include/karto_sdk/Karto.h
+++ b/lib/karto_sdk/include/karto_sdk/Karto.h
@@ -50,6 +50,7 @@
 #include <sstream>
 #include <stdexcept>
 #include <shared_mutex>
+#include <mutex>
 
 #ifdef USE_POCO
 #include <Poco/Mutex.h>