diff --git a/internal/ceres/manifold.cc b/internal/ceres/manifold.cc
index 365d5d65b..dc88302fd 100644
--- a/internal/ceres/manifold.cc
+++ b/internal/ceres/manifold.cc
@@ -1,5 +1,6 @@
 #include "ceres/manifold.h"
 
+#include <algorithm>
 #include <cmath>
 
 #include "ceres/internal/eigen.h"