diff --git a/compound-probability/index.html b/compound-probability/index.html
index 928194c..b16f456 100644
--- a/compound-probability/index.html
+++ b/compound-probability/index.html
@@ -113,7 +113,7 @@ <h3>Set Theory</h3>
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                     <p class='text-center' id='invalidSet'></p>
-                    <p>You may wish to use the visualization to verify some of the following <a href='https://cs.brown.edu/courses/cs022/static/files/documents/sets.pdf'>set identities</a>.</p>
+                    <p>You may wish to use the visualization to verify some of the following <a href='https://brown-cs22.github.io/resources/math-resources/sets.pdf'>set identities</a>.</p>
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             <div id="section2">