diff --git a/.changeset/curly-hornets-bathe.md b/.changeset/curly-hornets-bathe.md
new file mode 100644
index 00000000000..a729d86b6a2
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+++ b/.changeset/curly-hornets-bathe.md
@@ -0,0 +1,5 @@
+---
+'@primer/react': minor
+---
+
+UnderlineNav2: Introduce disclosure widget pattern