diff --git a/html/changelogs/AutoChangeLog-pr-4509.yml b/html/changelogs/AutoChangeLog-pr-4509.yml
new file mode 100644
index 00000000000..9536d966db4
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+++ b/html/changelogs/AutoChangeLog-pr-4509.yml
@@ -0,0 +1,4 @@
+author: Tastyfish
+delete-after: True
+changes: 
+  - experiment: "Progress bars, buttons, and several of the values in UI's are now animated."