diff --git a/.changeset/five-queens-tan.md b/.changeset/five-queens-tan.md
new file mode 100644
index 00000000..0140f47a
--- /dev/null
+++ b/.changeset/five-queens-tan.md
@@ -0,0 +1,7 @@
+---
+"tiktoken": patch
+"js-tiktoken": patch
+"@dqbd/tiktoken": patch
+---
+
+Add support for gpt-4o and gpt-4o-miniy