diff --git a/MANIFEST.in b/MANIFEST.in
index f819dc43..82046898 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -2,7 +2,3 @@ include LICENSE
 include README.rst
 include MIGRATING_FROM_OLDER_VERSIONS.rst
 include CHANGELOG.md
-recursive-include sampledata *.zip
-recursive-include smart_open/tests/test_data *.txt *.xz *.gz
-include integration-tests/README.md integration-tests/*.txt
-recursive-include integration-tests *.py
diff --git a/setup.py b/setup.py
index 313bd454..d304f848 100644
--- a/setup.py
+++ b/setup.py
@@ -58,12 +58,7 @@ def read(fname):
     version=__version__,
     description='Utils for streaming large files (S3, HDFS, GCS, Azure Blob Storage, gzip, bz2...)',
     long_description=read('README.rst'),
-
     packages=find_packages(exclude=["smart_open.tests*"]),
-    package_data={
-        "smart_open.tests": ["test_data/*"],
-    },
-
     author='Radim Rehurek',
     author_email='me@radimrehurek.com',
     maintainer='Radim Rehurek',