diff --git a/test/common/TestBed.hpp b/test/common/TestBed.hpp
index 132aa5256c..7f0f77edcc 100644
--- a/test/common/TestBed.hpp
+++ b/test/common/TestBed.hpp
@@ -10,6 +10,7 @@
 #include "TestBedChild.hpp"
 #include "EnvVars.hpp"
 #include <gtest/gtest.h>
+#include <iomanip>
 
 namespace RcclUnitTesting
 {