diff --git a/src/pages/index.astro b/src/pages/index.astro
index 3af93fa740c94..05bc05e2b58a5 100644
--- a/src/pages/index.astro
+++ b/src/pages/index.astro
@@ -169,7 +169,7 @@ const latest = [
             specifications, tests, review, security, and judgment in the loop.
           </p>
           <p class="course-copy">
-            I have also mentored eleven students, nine of whom are now Ph.D. students.{' '}
+            I have also mentored ten students, eight of whom are now Ph.D. students.{' '}
             <a href="/teaching/#mentoring">See where they went</a>.
           </p>
         </div>
diff --git a/src/pages/teaching.astro b/src/pages/teaching.astro
index 328df0d9020fd..cb153352dd921 100644
--- a/src/pages/teaching.astro
+++ b/src/pages/teaching.astro
@@ -20,11 +20,6 @@ const mentees = [
     'Automated testing of named entity recognition systems',
     'M.S. student, UC San Diego',
   ],
-  [
-    'Qingshuo Guo',
-    'Retromorphic testing and the test-oracle problem',
-    'Ph.D. student, University of Waterloo',
-  ],
   ['Aoyang Fang', 'Graph database testing', 'Ph.D. student, CUHK–Shenzhen'],
   [
     'Xinran Qin',
@@ -151,7 +146,7 @@ const mentees = [
         <p class="teaching-kicker">Mentoring</p>
         <h2 id="mentoring-title">Where my mentees went next.</h2>
         <p class="mentoring-note">
-          Eleven junior researchers and students I mentored on research projects; nine are now Ph.D.
+          Ten junior researchers and students I mentored on research projects; eight are now Ph.D.
           students.
         </p>
       </div>