diff --git a/package.json b/package.json
index 399cad2c..61103f2f 100644
--- a/package.json
+++ b/package.json
@@ -17,6 +17,7 @@
     "dom": "^0.0.3",
     "dynamics-web-api": "^1.7.4",
     "express": "^4.17.1",
+    "fibers": "^5.0.0",
     "govuk-frontend": "^3.13.0",
     "https": "^1.0.0",
     "jsonpath": "^1.1.1",
@@ -41,6 +42,8 @@
     "sass": "^1.35.1",
     "sass-loader": "^12.1.0",
     "swr": "^0.5.6",
+    "trim-newlines": "^4.0.2",
+    "typescript": "^4.3.5",
     "webpack": "^5.40.0",
     "xml2js": "^0.4.23",
     "xmldom": "^0.6.0",