diff --git a/dev-docs/runtime-migration/spike/package.json b/dev-docs/runtime-migration/spike/package.json
index 01b02af6c0a..6d34adfbb5f 100644
--- a/dev-docs/runtime-migration/spike/package.json
+++ b/dev-docs/runtime-migration/spike/package.json
@@ -32,7 +32,7 @@
     "dayjs": "1.8.21",
     "diff": "5.0.0",
     "esbuild": "0.28.1",
-    "fontoxpath": "3.29.1",
+    "fontoxpath": "3.34.0",
     "js-yaml": "4.1.1",
     "lodash": "4.17.21",
     "moment-guess": "1.2.4",