diff --git a/src/ulib/system/thread.cpp b/src/ulib/system/thread.cpp
index 8216164..6202af3 100644
--- a/src/ulib/system/thread.cpp
+++ b/src/ulib/system/thread.cpp
@@ -5,6 +5,7 @@
 #include <unistd.h>
 #include <sys/syscall.h>
 #include <exception>
+#include <memory>
 
 namespace ulib {