diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 305ea7d0..fd5c94c8 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -27,6 +27,21 @@ git checkout -b my-new-branch
 
 7. Run `pnpm dev` in Elk's root folder to start dev server or `pnpm dev:mocked` to start dev server with `@elkdev@universeodon.com` user.
 
+### Running PWA on dev server
+
+In order to run Elk with PWA enabled, run `pnpm run dev:pwa` in Elk's root folder to start dev server or `pnpm dev:pwa:mocked` to start dev server with `@elkdev@universeodon.com` user.
+
+You should test the Elk PWA application on private browsing mode on any Chromium based browser: will not work on Firefox and Safari.
+
+If not using private browsing mode, you will need to uninstall the PWA application from your browser once you finish testing:
+- Open `Dev Tools` (`Option + ⌘ + J` on MacOS, `Shift + CTRL + J` on Windows/Linux)
+- Go to `Application > Storage`, you should check following checkboxes:
+    - Application: [x] Unregister service worker
+    - Storage: [x] IndexedDB and [x] Local and session storage
+    - Cache: [x] Cache storage and [x] Application cache
+- Click on `Clear site data` button
+- Go to `Application > Service Workers` and check the current `service worker` is missing or has the state `deleted` or `redundant
+
 ## CI errors
 
 Sometimes when you push your changes, the CI can fail, but we cannot check the logs to see what went wrong, run the following commands on your local environment: