diff -ru VTK-9.4.0.orig/ThirdParty/ioss/vtkioss/Ioss_Field.C VTK-9.4.0/ThirdParty/ioss/vtkioss/Ioss_Field.C
--- VTK-9.4.0.orig/ThirdParty/ioss/vtkioss/Ioss_Field.C	2024-12-24 11:47:28.388237205 +0100
+++ VTK-9.4.0/ThirdParty/ioss/vtkioss/Ioss_Field.C	2024-12-24 11:47:41.611772181 +0100
@@ -12,6 +12,7 @@
 #include <cstdint>
 #include "vtk_fmt.h"
 #include VTK_FMT(fmt/ostream.h)
+#include VTK_FMT(fmt/ranges.h)
 #include <iostream>
 #include <string>
 #include <vector>
diff -ru VTK-9.4.0.orig/ThirdParty/ioss/vtkioss/Ioss_VariableType.C VTK-9.4.0/ThirdParty/ioss/vtkioss/Ioss_VariableType.C
--- VTK-9.4.0.orig/ThirdParty/ioss/vtkioss/Ioss_VariableType.C	2024-12-24 11:47:28.394903974 +0100
+++ VTK-9.4.0/ThirdParty/ioss/vtkioss/Ioss_VariableType.C	2024-12-24 11:55:41.185009270 +0100
@@ -19,6 +19,7 @@
 #include VTK_FMT(fmt/core.h)
 #include VTK_FMT(fmt/format.h)
 #include VTK_FMT(fmt/ostream.h)
+#include VTK_FMT(fmt/ranges.h)
 #include <map>
 #include <sstream>
 #include <string>