diff --git a/.changeset/sweet-games-build.md b/.changeset/sweet-games-build.md
new file mode 100644
index 000000000..a71e3de25
--- /dev/null
+++ b/.changeset/sweet-games-build.md
@@ -0,0 +1,5 @@
+---
+'mermaid': patch
+---
+
+fix(er-diagram): prevent syntax error when using 'u', numbers, and decimals in node names