diff --git a/.changeset/clean-wolves-turn.md b/.changeset/clean-wolves-turn.md
new file mode 100644
index 000000000..7a44c1c16
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+++ b/.changeset/clean-wolves-turn.md
@@ -0,0 +1,5 @@
+---
+'mermaid': patch
+---
+
+fix: Render newlines as spaces in class diagrams