diff --git a/references.bib b/references.bib
index 684969b..45d0069 100644
--- a/references.bib
+++ b/references.bib
@@ -197,7 +197,7 @@
 	booktitle = {Internet Measurement Conference},
 	publisher = {ACM},
 	year = {2020},
-	url = {https://dl.acm.org/doi/pdf/10.1145/3419394.3423644},
+	url = {https://censorbib.nymity.ch/pdf/Alice2020a.pdf},
 }
 
 @inproceedings{Raman2020b,
@@ -278,7 +278,7 @@
 	booktitle = {Web Science},
 	publisher = {ACM},
 	year = {2020},
-	url = {https://dl.acm.org/doi/pdf/10.1145/3394231.3397891},
+	url = {https://censorbib.nymity.ch/pdf/Singh2020a.pdf},
 }
 
 @article{Zhu2020a,