diff --git a/web/changelogs/10.0.md b/web/changelogs/10.0.md
index 862526a2..0415370b 100644
--- a/web/changelogs/10.0.md
+++ b/web/changelogs/10.0.md
@@ -1,6 +1,9 @@
 ---
 title: "cobalt, reborn"
 date: "9 Sept, 2024"
+banner:
+    file: "cobalt10.png"
+    alt: "image of meowbalt smiling and loafing in front of a wall of text."
 ---
 
 everything is new! this update marks the start of the latest chapter for cobalt. we spent the entire summer working hard to deliver the best experience ever, and we really hope you enjoy the rebirth of cobalt.
diff --git a/web/static/update-banners/cobalt10.png b/web/static/update-banners/cobalt10.png
new file mode 100644
index 00000000..d95672e0
Binary files /dev/null and b/web/static/update-banners/cobalt10.png differ