diff --git a/developers/subgraph/README.md b/developers/subgraph/README.md
index abe6d0a6..dfc08771 100644
--- a/developers/subgraph/README.md
+++ b/developers/subgraph/README.md
@@ -32,8 +32,9 @@ When it comes to fetching valuable information about [Data NFTs](../contracts/da
 | ------------------- | ----------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------- |
 | Ethereum            | [Subgraph](https://v4.subgraph.mainnet.oceanprotocol.com)   | [GraphiQL](https://v4.subgraph.mainnet.oceanprotocol.com/subgraphs/name/oceanprotocol/ocean-subgraph/graphql)   |
 | Polygon             | [Subgraph](https://v4.subgraph.polygon.oceanprotocol.com/)  | [GraphiQL](https://v4.subgraph.polygon.oceanprotocol.com/subgraphs/name/oceanprotocol/ocean-subgraph/graphql)   |
-| BNB Smart Chain | [Subgraph](https://v4.subgraph.bsc.oceanprotocol.com)       | [GraphiQL](https://v4.subgraph.bsc.oceanprotocol.com/subgraphs/name/oceanprotocol/ocean-subgraph/graphql)       |
+| BNB Smart Chain     | [Subgraph](https://v4.subgraph.bsc.oceanprotocol.com)       | [GraphiQL](https://v4.subgraph.bsc.oceanprotocol.com/subgraphs/name/oceanprotocol/ocean-subgraph/graphql)       |
 | Energy Web Chain    | [Subgraph](https://v4.subgraph.energyweb.oceanprotocol.com) | [GraphiQL](https://v4.subgraph.energyweb.oceanprotocol.com/subgraphs/name/oceanprotocol/ocean-subgraph/graphql) |
+| OP Mainnet(Optimism)| [Subgraph](https://v4.subgraph.optimism.oceanprotocol.com)  | [GraphiQL](https://v4.subgraph.optimism.oceanprotocol.com/subgraphs/name/oceanprotocol/ocean-subgraph/graphql) |
 | Moonriver           | [Subgraph](https://v4.subgraph.moonriver.oceanprotocol.com) | [GraphiQL](https://v4.subgraph.moonriver.oceanprotocol.com/subgraphs/name/oceanprotocol/ocean-subgraph/graphql) |
 | Mumbai              | [Subgraph](https://v4.subgraph.mumbai.oceanprotocol.com)    | [GraphiQL](https://v4.subgraph.mumbai.oceanprotocol.com/subgraphs/name/oceanprotocol/ocean-subgraph/graphql)    |
 | Görli               | [Subgraph](https://v4.subgraph.goerli.oceanprotocol.com)    | [GraphiQL](https://v4.subgraph.goerli.oceanprotocol.com/subgraphs/name/oceanprotocol/ocean-subgraph/graphql)    |