diff --git a/.lycheeignore b/.lycheeignore
index 81bf9b0..ba2d947 100644
--- a/.lycheeignore
+++ b/.lycheeignore
@@ -4,4 +4,6 @@ https://adworld.xctf.org.cn/challenges/list
 https://e5c78mnhgz.feishu.cn/docx/doxcnxBONvnxSLi0MfaNZWvrcSb
 https://datawhale.feishu.cn/docs/doccn0AOicI3LJ8RwhY0cuDPSOc#
 https://message.hdu-cs.wiki/
-https://adworld.xctf.org.cn/
\ No newline at end of file
+https://adworld.xctf.org.cn/
+http://sequence-gallery.chal.crewc.tf:8080/
+https://www.csie.ntu.edu.tw/~b97053/paper/Rendle2010FM.pdf
\ No newline at end of file