diff --git a/.changeset/plenty-onions-raise.md b/.changeset/plenty-onions-raise.md
new file mode 100644
index 000000000..1cb3cfd78
--- /dev/null
+++ b/.changeset/plenty-onions-raise.md
@@ -0,0 +1,5 @@
+---
+"@marko/runtime-tags": patch
+---
+
+Ensure errors are rethrown when rendering sync in SSR via `.toString`