From 2ea677c551620f2b44d75d571eb972a740264304 Mon Sep 17 00:00:00 2001
From: fis <jm.yuan@outlook.com>
Date: Wed, 13 Jul 2022 13:52:53 +0800
Subject: [PATCH] cpkl. [skip ci]

---
 doc/requirements.txt | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/doc/requirements.txt b/doc/requirements.txt
index 597ca7dcf1ff..0330814ab520 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -10,4 +10,5 @@ numpy
 recommonmark
 xgboost_ray
 sphinx-gallery
-pyspark
\ No newline at end of file
+pyspark
+cloudpickle
\ No newline at end of file