diff --git a/app/nodemon.json b/app/nodemon.json
index 31edf1f627..f159ce89f7 100644
--- a/app/nodemon.json
+++ b/app/nodemon.json
@@ -1,5 +1,5 @@
 {
-  "watch": ["./src", "../src/govuk"],
+  "watch": ["./src", "../src/govuk/**/*.{json,yaml}"],
   "ignore": ["**/*.test.*"],
   "ext": "mjs,json,yaml",
   "quiet": true
diff --git a/docs/contributing/tasks.md b/docs/contributing/tasks.md
index e73fb25b07..ad491c52ac 100644
--- a/docs/contributing/tasks.md
+++ b/docs/contributing/tasks.md
@@ -24,7 +24,7 @@ npm scripts are defined in `package.json`. These trigger a number of Gulp tasks.
 
 **`npm run serve` will do the following:**
 
-- start up Express, restarting when `.js` files change
+- start up Express, restarting when `.mjs`, `.json` or `.yaml` files change
 
 **`npm run build:public` will do the following:**