diff --git a/ortools/python/setup.py.in b/ortools/python/setup.py.in
index 4f9b1db5f7..d6f229bfc9 100644
--- a/ortools/python/setup.py.in
+++ b/ortools/python/setup.py.in
@@ -46,6 +46,7 @@ setup(
         'absl-py >= 0.13',
         'numpy >= 1.13.3',
         'protobuf >= 4.21.10',
+        'scipy >= 1.10.0',
     ],
     package_data={
         '@PYTHON_PROJECT@':[$<$<STREQUAL:$<TARGET_PROPERTY:@PROJECT_NAME@,TYPE>,SHARED_LIBRARY>:'.libs/*','../$<TARGET_SONAME_FILE_NAME:@PROJECT_NAME@>'>],