diff --git a/ortools/data/jobshop_scheduling_parser.cc b/ortools/data/jobshop_scheduling_parser.cc
index cb0a360b..c2f055eb 100644
--- a/ortools/data/jobshop_scheduling_parser.cc
+++ b/ortools/data/jobshop_scheduling_parser.cc
@@ -14,6 +14,7 @@
 #include "ortools/data/jobshop_scheduling_parser.h"
 
 #include <cmath>
+#include <gflags/gflags.h>
 
 #include "google/protobuf/wrappers.pb.h"
 #include "ortools/base/filelineiter.h"