diff --git a/setup.py b/setup.py
index 4d1518a8..ca1e0337 100644
--- a/setup.py
+++ b/setup.py
@@ -20,6 +20,7 @@
     'inspire-schemas~=46.0',
     'inspire-dojson~=46.0',
     'Scrapy>=1.1.0',
+    'scrapy-crawl-once>=0.1.1',
     # TODO: unpin once they support wheel building again
     'scrapyd==1.1.0',
     'scrapyd-client>=1.0.1',