diff --git a/scripts/build_sdist.sh b/scripts/build_sdist.sh
index 40d1294..dbacde7 100755
--- a/scripts/build_sdist.sh
+++ b/scripts/build_sdist.sh
@@ -8,5 +8,4 @@ cd /pandas
 rm -rf dist
 git clean -xfd
 python setup.py clean --quiet
-python setup.py cython -j 4 --quiet
 python setup.py sdist --formats=gztar --quiet