diff --git a/include/boost/pending/integer_range.hpp b/include/boost/pending/integer_range.hpp
index 81ecf4d..f5edceb 100644
--- a/include/boost/pending/integer_range.hpp
+++ b/include/boost/pending/integer_range.hpp
@@ -13,6 +13,7 @@
 
 #include <boost/config.hpp>
 #include <boost/iterator/counting_iterator.hpp>
+#include <algorithm>
 
 namespace boost {