diff --git a/README.md b/README.md
index 2eb73e3a0..5e25431cd 100644
--- a/README.md
+++ b/README.md
@@ -75,6 +75,8 @@ npm start
 
 To use the app together with MetaMask, importing one of the accounts auto-generated by the Ganache container is the easiest way to have test ETH available. All of them have 100 ETH by default. Upon start, the `ocean_ganache_1` container will print out the private keys of multiple accounts in its logs. Pick one of them and import into MetaMask.
 
+To fully test all [The Graph](https://thegraph.com) integrations, you have to run your own local Graph node with our [`ocean-subgraph`](https://github.com/oceanprotocol/ocean-subgraph) deployed to it. Barge does not include a local subgraph so by default, the `config.subgraphUri` is hardcoded to the Rinkeby subgraph in our [`NetworkMonitor` component](https://github.com/oceanprotocol/market/blob/main/src/helpers/NetworkMonitor.tsx).
+
 > Cleaning all Docker images so they are fetched freshly is often a good idea to make sure no issues are caused by old or stale images: `docker system prune --all --volumes`
 
 ## 🦑 Environment variables