diff --git a/MANIFEST.in b/MANIFEST.in
index 4425f18..c1520f7 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -14,10 +14,10 @@ include *.yaml
 include pytest.ini
 prune docs/_build
 recursive-include pytest_reana *.py
+recursive-include pytest_reana *.csv
+recursive-include pytest_reana *.ipynb
 recursive-include docs *.py
 recursive-include docs *.png
 recursive-include docs *.rst
 recursive-include docs *.txt
 recursive-include tests *.py
-recursive-include tests *.csv
-recursive-include tests *.ipynb
diff --git a/pytest_reana/fixtures.py b/pytest_reana/fixtures.py
index 33c8407..4ad17bf 100644
--- a/pytest_reana/fixtures.py
+++ b/pytest_reana/fixtures.py
@@ -425,7 +425,7 @@ def sample_workflow_workspace(tmp_shared_volume_path):
     """
     test_workspace_path = pkg_resources.resource_filename(
         'pytest_reana',
-        '../tests/test_workspace')
+        'test_workspace')
     return shutil.copytree(test_workspace_path,
                            os.path.join(tmp_shared_volume_path,
                                         'test_workspace'))
diff --git a/tests/test_workspace/code/worldpopulation.ipynb b/pytest_reana/test_workspace/code/worldpopulation.ipynb
similarity index 100%
rename from tests/test_workspace/code/worldpopulation.ipynb
rename to pytest_reana/test_workspace/code/worldpopulation.ipynb
diff --git a/tests/test_workspace/data/World_historical_and_predicted_populations_in_percentage.csv b/pytest_reana/test_workspace/data/World_historical_and_predicted_populations_in_percentage.csv
similarity index 100%
rename from tests/test_workspace/data/World_historical_and_predicted_populations_in_percentage.csv
rename to pytest_reana/test_workspace/data/World_historical_and_predicted_populations_in_percentage.csv