diff --git a/sdk/deploy-operator.mdx b/sdk/deploy-operator.mdx
index bafe608..a97990b 100644
--- a/sdk/deploy-operator.mdx
+++ b/sdk/deploy-operator.mdx
@@ -204,6 +204,7 @@ Deployment is supported on all configured networks:
 | Base Mainnet | 8453 | `eip155:8453` |
 | Ethereum | 1 | `eip155:1` |
 | Ethereum Sepolia | 11155111 | `eip155:11155111` |
+| Arbitrum Sepolia | 421614 | `eip155:421614` |
 | Polygon | 137 | `eip155:137` |
 | Arbitrum | 42161 | `eip155:42161` |
 | Optimism | 10 | `eip155:10` |
diff --git a/sdk/helpers/refundable.mdx b/sdk/helpers/refundable.mdx
index 333841c..1d5fbfe 100644
--- a/sdk/helpers/refundable.mdx
+++ b/sdk/helpers/refundable.mdx
@@ -121,7 +121,7 @@ const option = refundable({
 
 ## Supported Networks
 
-The function resolves addresses from the network config for all supported networks. See `getNetworkConfig()` for the full list (Base Sepolia, Base, Ethereum, Ethereum Sepolia, Polygon, Arbitrum, Optimism, Avalanche, Celo, Monad).
+The function resolves addresses from the network config for all supported networks. See `getNetworkConfig()` for the full list (Base Sepolia, Base, Ethereum, Ethereum Sepolia, Arbitrum Sepolia, Polygon, Arbitrum, Optimism, Avalanche, Celo, Monad).
 
 ```typescript
 refundable({ network: 'eip155:84532', ... }, '0x...');  // Base Sepolia
diff --git a/sdk/overview.mdx b/sdk/overview.mdx
index 8e9f02b..c0e9ceb 100644
--- a/sdk/overview.mdx
+++ b/sdk/overview.mdx
@@ -40,6 +40,7 @@ The SDK is organized into packages designed for specific roles in the payment ec
 | Base Mainnet | 8453 | Deployed, not yet tested |
 | Ethereum | 1 | Deployed, not yet tested |
 | Ethereum Sepolia | 11155111 | Deployed, not yet tested |
+| Arbitrum Sepolia | 421614 | Deployed, not yet tested |
 | Polygon | 137 | Deployed, not yet tested |
 | Arbitrum | 42161 | Deployed, not yet tested |
 | Optimism | 10 | Deployed, not yet tested |