diff --git a/dev-python/pyzotero/pyzotero-1.4.22.ebuild b/dev-python/pyzotero/pyzotero-1.4.22.ebuild
index 42fc9f4f0e238..9bea3eeaca086 100644
--- a/dev-python/pyzotero/pyzotero-1.4.22.ebuild
+++ b/dev-python/pyzotero/pyzotero-1.4.22.ebuild
@@ -25,6 +25,7 @@ RDEPEND="
 "
 
 BDEPEND="test? (
+	dev-python/python-dateutil[${PYTHON_USEDEP}]
 	dev-python/httpretty[${PYTHON_USEDEP}]
 )"