diff --git a/mjpc/utilities.cc b/mjpc/utilities.cc
index 247c0748e..0d9cbe1b0 100644
--- a/mjpc/utilities.cc
+++ b/mjpc/utilities.cc
@@ -15,6 +15,7 @@
 #include "mjpc/utilities.h"
 
 #include <algorithm>
+#include <bit>
 #include <cerrno>
 #include <cmath>
 #include <cstdint>