diff --git a/packages/shadcn/src/utils/updaters/update-fonts.ts b/packages/shadcn/src/utils/updaters/update-fonts.ts
index 4f448c3bdc..e29480e83a 100644
--- a/packages/shadcn/src/utils/updaters/update-fonts.ts
+++ b/packages/shadcn/src/utils/updaters/update-fonts.ts
@@ -69,7 +69,7 @@ export async function massageTreeForFonts(
     tree.css ??= {}
     tree.css["@layer base"] ??= {}
 
-    for (const [selector, classes] of groups.entries()) {
+    for (const [selector, classes] of Array.from(groups.entries())) {
       const fontClasses = classes.join(" ")
       tree.css["@layer base"][selector] ??= {}
       // Find existing @apply key and merge, or create new.