diff --git a/header.tpl b/header.tpl
index 393b526..4662e85 100644
--- a/header.tpl
+++ b/header.tpl
@@ -180,7 +180,7 @@
       <div class="menu-item">
         <img class="top-icon" src="img/update-icon.svg" alt="update icon"/>
         <a
-        href="https://github.com/NullHypothesis/censorbib/commits/master">Last update: 2021-9-13</a>
+        href="https://github.com/NullHypothesis/censorbib/commits/master">Last update: 2021-11-8</a>
       </div>
       <div class="menu-item">
         <img class="top-icon" src="img/donate-icon.svg" alt="donate icon"/>
diff --git a/references.bib b/references.bib
index d3af77f..1a24f64 100644
--- a/references.bib
+++ b/references.bib
@@ -1,3 +1,21 @@
+@inproceedings{Xue2021a,
+	author = {Diwen Xue and Reethika Ramesh and ValdikSS and Leonid Evdokimov and Andrey Viktorov and Arham Jain and Eric Wustrow and Simone Basso and Roya Ensafi},
+	title = {Throttling {Twitter}: an emerging censorship technique in {Russia}},
+	booktitle = {Internet Measurement Conference},
+	publisher = {ACM},
+	year = {2021},
+	url = {https://dl.acm.org/doi/pdf/10.1145/3487552.3487858},
+}
+
+@inproceedings{Elmenhorst2021a,
+	author = {Kathrin Elmenhorst and Bertram Sch{\"u}tz and Nils Aschenbruck and Simone Basso},
+	title = {Web censorship measurements of {HTTP}/3 over {QUIC}},
+	booktitle = {Internet Measurement Conference},
+	publisher = {ACM},
+	year = {2021},
+	url = {https://dl.acm.org/doi/pdf/10.1145/3487552.3487836},
+}
+
 @inproceedings{Padmanabhan2021a,
 	author = {Ramakrishna Padmanabhan and and Arturo Filast\`{o} and Maria Xynou and Ram Sundara Raman and Kennedy Middleton and Mingwei Zhang and Doug Madory and Molly Roberts and Alberto Dainotti},
 	title = {A multi-perspective view of {Internet} censorship in {Myanmar}},