Update README.md

README.md

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 <td>Courses</td>
 <td>
 CMU PGM (<a href="https://sailinglab.github.io/pgm-spring-2019/" target="_blank">S-19</a>) <br>
-CMU DeepRL (<a href="https://cmudeeprl.github.io/703website_f19/" target="_blank">F-19</a>, <a href="https://cmudeeprl.github.io/Spring202010403website/" target="_blank">S-20</a>, <a href="https://cmudeeprl.github.io/703website/" target="_blank">F-20</a>) <br>
+CMU DeepRL (<a href="https://cmudeeprl.github.io/703website_f19/" target="_blank">F-19</a>, <a href="https://cmudeeprl.github.io/Spring202010403website/" target="_blank">S-20</a>, <a href="https://cmudeeprl.github.io/703website/" target="_blank">F-20</a>, <a href="https://cmudeeprl.github.io/403_website/"target="_blank">S-21</a>) <br>
 CMU MMML (<a href="https://cmu-multicomp-lab.github.io/mmml-course/fall2020/" target="_blank">F-20</a>) <br>
 CMU Distributed Systems (<a href="https://andrew.cmu.edu/course/15-440/" target="_blank">S-21</a>)
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@@ -84,7 +84,7 @@ CMU Distributed Systems (<a href="https://andrew.cmu.edu/course/15-440/" target=
 <td>
 ML Retrospectives (NeurIPS: <a href="https://ml-retrospectives.github.io/neurips2019/" target="_blank">2019</a>, <a href="https://ml-retrospectives.github.io/neurips2020/" target="_blank">2020</a>; ICML: <a href="https://ml-retrospectives.github.io/icml2020/" target="_blank">2020</a>) <br>
 HAMLETS (NeurIPS: <a href="https://hamlets-workshop.github.io/" target="_blank">2020</a>) <br>
-ICBINB (NeurIPS: <a href="https://i-cant-believe-its-not-better.github.io/" target="_blank">2020</a>) <br>
+ICBINB (NeurIPS: <a href="https://i-cant-believe-its-not-better.github.io/" target="_blank">2020</a>, <a href="https://i-cant-believe-its-not-better.github.io/neurips2021/" target="_blank">2021</a>) <br>
 Neural Compression (ICLR: <a href="https://neuralcompression.github.io/" target="_blank">2021</a>)
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