diff --git a/MANIFEST b/MANIFEST
index 52e5135038698d285321024fa222bf1376a6a93c..048e0c0c039b6b1061d9af09a8ea3ed68074bf29 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -35,6 +35,7 @@ binarycpython/tests/tests_population_extensions/test_grid_logging.py
 binarycpython/tests/tests_population_extensions/test_grid_options_defaults.py
 binarycpython/tests/tests_population_extensions/test_gridcode.py
 binarycpython/tests/tests_population_extensions/test_metadata.py
+binarycpython/tests/tests_population_extensions/test_sampling_variables.py
 binarycpython/tests/tests_population_extensions/test_slurm.py
 binarycpython/tests/tests_population_extensions/test_spacing_functions.py
 binarycpython/tests/tests_population_extensions/test_version_info.py