diff --git a/src/core-fmt/include/units/format.h b/src/core-fmt/include/units/format.h
index 14f28cb3..4dd61804 100644
--- a/src/core-fmt/include/units/format.h
+++ b/src/core-fmt/include/units/format.h
@@ -24,6 +24,8 @@
 
 #include <units/customization_points.h>
 #include <units/quantity.h>
+
+#include <algorithm>
 #include <string_view>
 
 // IWYU pragma: begin_exports