diff --git a/header.tpl b/header.tpl
index 3d8bc42..fd73ca0 100644
--- a/header.tpl
+++ b/header.tpl
@@ -189,7 +189,7 @@
           <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: 2023-05-09</a>
+            href="https://github.com/NullHypothesis/censorbib/commits/master">Last update: 2023-07-11</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 a0dfd8a..7982617 100644
--- a/references.bib
+++ b/references.bib
@@ -1,3 +1,75 @@
+@inproceedings{Master2023a,
+	author = {Alexander Master and Christina Garman},
+	title = {A Worldwide View of Nation-state {Internet} Censorship},
+	booktitle = {Free and Open Communications on the Internet},
+	publisher = {},
+	year = {2023},
+	url = {https://www.petsymposium.org/foci/2023/foci-2023-0008.pdf},
+}
+
+@inproceedings{Xue2023a,
+	author = {Diwen Xue and Roya Ensafi},
+	title = {The Use of Push Notification in Censorship Circumvention},
+	booktitle = {Free and Open Communications on the Internet},
+	publisher = {},
+	year = {2023},
+	url = {https://www.petsymposium.org/foci/2023/foci-2023-0009.pdf},
+}
+
+@inproceedings{Nourin2023a,
+	author = {Sadia Nourin and Kevin Bock and Nguyen Phong Hoang and Dave Levin},
+	title = {Detecting Network Interference Without Endpoint Participation},
+	booktitle = {Free and Open Communications on the Internet},
+	publisher = {},
+	year = {2023},
+	url = {https://www.petsymposium.org/foci/2023/foci-2023-0010.pdf},
+}
+
+@inproceedings{Fifield2023a,
+	author = {David Fifield and Linus Nordberg},
+	title = {Running a high-performance pluggable transports {Tor} bridge},
+	booktitle = {Free and Open Communications on the Internet},
+	publisher = {},
+	year = {2023},
+	url = {https://www.petsymposium.org/foci/2023/foci-2023-0011.pdf},
+}
+
+@inproceedings{Ortwein2023a,
+	author = {Aaron Ortwein and Kevin Bock and Dave Levin},
+	title = {Towards a Comprehensive Understanding of {Russian} Transit Censorship},
+	booktitle = {Free and Open Communications on the Internet},
+	publisher = {},
+	year = {2023},
+	url = {https://www.petsymposium.org/foci/2023/foci-2023-0012.pdf},
+}
+
+@inproceedings{Wails2023a,
+	author = {Ryan Wails and Rob Jansen and Aaron Johnson and Micah Sherr},
+	title = {{Proteus}: Programmable Protocols for Censorship Circumvention},
+	booktitle = {Free and Open Communications on the Internet},
+	publisher = {},
+	year = {2023},
+	url = {https://www.petsymposium.org/foci/2023/foci-2023-0013.pdf},
+}
+
+@inproceedings{Jia2023a,
+	author = {Watson Jia and Joseph Eichenhofer and Liang Wang and Prateek Mittal},
+	title = {{Voiceover}: Censorship-Circumventing Protocol Tunnels with Generative Modeling},
+	booktitle = {Free and Open Communications on the Internet},
+	publisher = {},
+	year = {2023},
+	url = {https://www.petsymposium.org/foci/2023/foci-2023-0014.pdf},
+}
+
+@inproceedings{Tran2023a,
+	author = {Nhi Tran and Kevin Bock and Dave Levin},
+	title = {Crowdsourcing the Discovery of Server-side Censorship Evasion Strategies},
+	booktitle = {Free and Open Communications on the Internet},
+	publisher = {},
+	year = {2023},
+	url = {https://www.petsymposium.org/foci/2023/foci-2023-0016.pdf},
+}
+
 @inproceedings{Ververis2021a,
        title        = {Understanding {Internet} Censorship in {Europe}: The Case of {Spain}},
        author       = {Vasilis Ververis and Tatiana Ermakova and Marios Isaakidis and Simone Basso and Benjamin Fabian and Stefania Milan},