diff --git a/cpp/csp/core/DynamicBitSet.h b/cpp/csp/core/DynamicBitSet.h
index 461f07040..b77b96c94 100644
--- a/cpp/csp/core/DynamicBitSet.h
+++ b/cpp/csp/core/DynamicBitSet.h
@@ -6,6 +6,7 @@
 #include <csp/core/Platform.h>
 #include <cstring>
 #include <type_traits>
+#include <utility>
 
 namespace csp
 {