diff --git a/makefiles/Makefile.python.mk b/makefiles/Makefile.python.mk
index c164aab565..e5eb77ea2d 100644
--- a/makefiles/Makefile.python.mk
+++ b/makefiles/Makefile.python.mk
@@ -969,6 +969,7 @@ test_package_python: package_python
 	$(COPY) ortools$Ssat$Ssamples$Ssimple_sat_program.py $(PYPI_ARCHIVE_TEMP_DIR)$Svenv
 	$(COPY) ortools$Sconstraint_solver$Ssamples$Stsp.py $(PYPI_ARCHIVE_TEMP_DIR)$Svenv
 	$(COPY) ortools$Sconstraint_solver$Ssamples$Svrp.py $(PYPI_ARCHIVE_TEMP_DIR)$Svenv
+	$(COPY) ortools$Sconstraint_solver$Ssamples$Scvrptw_break.py $(PYPI_ARCHIVE_TEMP_DIR)$Svenv
 ifneq ($(SYSTEM),win)
 	$(PYPI_ARCHIVE_TEMP_DIR)/venv/bin/python -m pip install $(PYPI_ARCHIVE_TEMP_DIR)/ortools/dist/*.whl
 	$(PYPI_ARCHIVE_TEMP_DIR)/venv/bin/python $(PYPI_ARCHIVE_TEMP_DIR)/venv/test.py
@@ -980,6 +981,7 @@ ifneq ($(SYSTEM),win)
 	$(PYPI_ARCHIVE_TEMP_DIR)/venv/bin/python $(PYPI_ARCHIVE_TEMP_DIR)/venv/simple_sat_program.py
 	$(PYPI_ARCHIVE_TEMP_DIR)/venv/bin/python $(PYPI_ARCHIVE_TEMP_DIR)/venv/tsp.py
 	$(PYPI_ARCHIVE_TEMP_DIR)/venv/bin/python $(PYPI_ARCHIVE_TEMP_DIR)/venv/vrp.py
+	$(PYPI_ARCHIVE_TEMP_DIR)/venv/bin/python $(PYPI_ARCHIVE_TEMP_DIR)/venv/cvrptw_break.py
 else
 # wildcar not working on windows:  i.e. `pip install *.whl`:
 # *.whl is not a valid wheel filename.
@@ -993,6 +995,7 @@ else
 	$(PYPI_ARCHIVE_TEMP_DIR)\venv\Scripts\python $(PYPI_ARCHIVE_TEMP_DIR)\venv\simple_sat_program.py
 	$(PYPI_ARCHIVE_TEMP_DIR)\venv\Scripts\python $(PYPI_ARCHIVE_TEMP_DIR)\venv\tsp.py
 	$(PYPI_ARCHIVE_TEMP_DIR)\venv\Scripts\python $(PYPI_ARCHIVE_TEMP_DIR)\venv\vrp.py
+	$(PYPI_ARCHIVE_TEMP_DIR)\venv\Scripts\python $(PYPI_ARCHIVE_TEMP_DIR)\venv\cvrptw_break.py
 endif
 endif # ifneq ($(PYTHON_EXECUTABLE),)