diff --git a/news/changelog-1.6.md b/news/changelog-1.6.md
index cf79482f352..7216086e743 100644
--- a/news/changelog-1.6.md
+++ b/news/changelog-1.6.md
@@ -32,6 +32,7 @@ All changes included in 1.6:
 - ([#9742](https://github.com/quarto-dev/quarto-cli/issues/9742)): Links to cross-referenced images correctly works.
 - ([#9558](https://github.com/quarto-dev/quarto-cli/issues/9558)): To prevent default footer to show on slide, set `footer='false'` attribute on the slide header, e.g. `## Slide with no footer {footer='false'}`
 - ([#6012](https://github.com/quarto-dev/quarto-cli/issues/6012)): Add styling for `kbd` element in Revealjs slides.
+- ([#10887](https://github.com/quarto-dev/quarto-cli/issues/10887)): Updating default Mathjax used from 2.7.0 to 2.7.9.
 
 ## `typst` Format
 
diff --git a/src/format/reveal/format-reveal.ts b/src/format/reveal/format-reveal.ts
index b96888bfeb8..657fecdc40e 100644
--- a/src/format/reveal/format-reveal.ts
+++ b/src/format/reveal/format-reveal.ts
@@ -87,7 +87,7 @@ export function revealjsFormat() {
         [kHtmlMathMethod]: {
           method: "mathjax",
           url:
-            "https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0/MathJax.js?config=TeX-AMS_HTML-full",
+            "https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.9/MathJax.js?config=TeX-AMS_HTML-full",
         },
         [kSlideLevel]: 2,
       },