diff --git a/clients/io_uring/client.cpp b/clients/io_uring/client.cpp
index cb9f398f955026943405bcc66ea5e1ec49eab7d8..f3965f4edf2ab7f48583d1ec601c4f7a26e75330 100644
--- a/clients/io_uring/client.cpp
+++ b/clients/io_uring/client.cpp
@@ -5,6 +5,7 @@
 #include <pthread.h>
 #include <sys/socket.h>
 #include <sys/types.h>
+#include <unistd.h>
 
 #include <atomic>
 #include <cassert>