diff --git a/package.json b/package.json
old mode 100755
new mode 100644
index 5a88c2d..f23d4d7
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
     "browser-sync": "^2.11.1",
     "client-sessions": "^0.8.0",
     "cookie-parser": "^1.4.3",
-    "cross-spawn": "^6.0.5",
+    "cross-spawn": "^7.0.0",
     "dotenv": "^6.0.0",
     "express": "4.16.3",
     "express-session": "^1.13.0",
@@ -27,11 +27,11 @@
     "govuk-frontend": "^2.3.0",
     "govuk_frontend_toolkit": "^7.5.0",
     "govuk_template_jinja": "^0.24.1",
-    "gulp": "^3.9.1",
+    "gulp": "^4.0.0",
     "gulp-clean": "^0.4.0",
-    "gulp-mocha": "^6.0.0",
+    "gulp-mocha": "^7.0.0",
     "gulp-nodemon": "^2.1.0",
-    "gulp-sass": "^4.0.1",
+    "gulp-sass": "^5.0.0",
     "gulp-sourcemaps": "^2.6.0",
     "gulp-util": "^3.0.7",
     "keypather": "^3.0.0",