diff --git a/pdf/README.md b/pdf/README.md
index b669cfc27..9734a1d03 100644
--- a/pdf/README.md
+++ b/pdf/README.md
@@ -67,5 +67,6 @@
 | 2020 | [TrafficSliver Fighting Website Fingerprinting Attacks with Traffic Splitting](2020-TrafficSliver_Fighting_Website_Fingerprinting_Attacks_with_Traffic_Splitting.pdf) |
 | 2020 | [Website Fingerprinting with Website Oracles](2020-Website_Fingerprinting_with_Website_Oracles.pdf) |
 | 2020 | [Why We Still Cant Browse in Peace On the Uniqueness and Reidentifiability of Web Browsing Histories](2020-Why_We_Still_Cant_Browse_in_Peace_On_the_Uniqueness_and_Reidentifiability_of_Web_Browsing_Histories.pdf) |
-| 2021 | [How Gamification Affects Software Developers Cautionary Evidence from a Natural Experiment on GitHub](2021-How_Gamification_Affects_Software_Developers_Cautionary_Evidence_from_a_Natural_Experiment_on_GitHub.pdf) |
 | 2021 | [Arizona Complaint Google](2021-Arizona_Complaint_Google.pdf) |
+| 2021 | [How Gamification Affects Software Developers Cautionary Evidence from a Natural Experiment on GitHub](2021-How_Gamification_Affects_Software_Developers_Cautionary_Evidence_from_a_Natural_Experiment_on_GitHub.pdf) |
+| 2021 | [How Great is the Great Firewall Measuring China's DNS Censorship](2021-How_Great_is_the_Great_Firewall_Measuring_Chinas_DNS_Censorship.pdf) |