diff --git a/.changeset/strong-laws-confess.md b/.changeset/strong-laws-confess.md
new file mode 100644
index 000000000..79230b10c
--- /dev/null
+++ b/.changeset/strong-laws-confess.md
@@ -0,0 +1,5 @@
+---
+"mermaid": patch
+---
+
+fix: Remove data loss when unsupported markdown is encountered