diff --git a/requirements.txt b/requirements.txt
index 61974601..afc2c8ac 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,6 +4,7 @@ feedfinder2>=0.0.4
 feedparser>=5.2.1
 jieba3k>=0.35.1
 lxml>=3.6.0
+lxml-html-clean>=0.4.2
 nltk>=3.2.1
 Pillow>=3.3.0
 pythainlp>=1.7.2