diff --git a/assets/chains.json b/assets/chains.json
index 824e0f6..3b27555 100644
--- a/assets/chains.json
+++ b/assets/chains.json
@@ -684,6 +684,18 @@
       "etherscanBaseUrl": "https://goerli.basescan.org",
       "etherscanApiKeyName": "ETHERSCAN_API_KEY"
     },
+    "84532": {
+      "internalId": "BaseSepolia",
+      "name": "base-sepolia",
+      "averageBlocktimeHint": 2000,
+      "isLegacy": false,
+      "supportsShanghai": true,
+      "isTestnet": true,
+      "nativeCurrencySymbol": null,
+      "etherscanApiUrl": "https://api-sepolia.basescan.org/api",
+      "etherscanBaseUrl": "https://sepolia.basescan.org",
+      "etherscanApiKeyName": "ETHERSCAN_API_KEY"
+    },
     "314159": {
       "internalId": "FilecoinCalibrationTestnet",
       "name": "filecoin-calibration-testnet",
diff --git a/src/chain.rs b/src/chain.rs
index be287e1..1406d22 100644
--- a/src/chain.rs
+++ b/src/chain.rs
@@ -286,6 +286,12 @@ impl Chain {
         Self::from_named(NamedChain::BaseGoerli)
     }
 
+    /// Returns the base sepolia chain.
+    #[inline]
+    pub const fn base_sepolia() -> Self {
+        Self::from_named(NamedChain::BaseSepolia)
+    }
+
     /// Returns the base mainnet chain.
     #[inline]
     pub const fn base_mainnet() -> Self {
@@ -322,6 +328,7 @@ impl Chain {
                     | NamedChain::OptimismSepolia
                     | NamedChain::Base
                     | NamedChain::BaseGoerli
+                    | NamedChain::BaseSepolia
             )
         )
     }
diff --git a/src/named.rs b/src/named.rs
index 396c991..4dbfd69 100644
--- a/src/named.rs
+++ b/src/named.rs
@@ -146,6 +146,7 @@ pub enum NamedChain {
 
     Base = 8453,
     BaseGoerli = 84531,
+    BaseSepolia = 84532,
 
     Linea = 59144,
     LineaTestnet = 59140,
@@ -314,6 +315,7 @@ impl NamedChain {
             | C::OptimismSepolia
             | C::Base
             | C::BaseGoerli
+            | C::BaseSepolia
             | C::Zora
             | C::ZoraGoerli
             | C::ZoraSepolia => 2_000,
@@ -421,6 +423,7 @@ impl NamedChain {
             | C::Holesky
             | C::Base
             | C::BaseGoerli
+            | C::BaseSepolia
             | C::Optimism
             | C::OptimismGoerli
             | C::OptimismSepolia
@@ -480,6 +483,7 @@ impl NamedChain {
             | C::OptimismGoerli
             | C::OptimismSepolia
             | C::BaseGoerli
+            | C::BaseSepolia
             | C::Gnosis
             | C::Chiado
             | C::ZoraSepolia
@@ -516,6 +520,7 @@ impl NamedChain {
             | C::AuroraTestnet
             | C::AvalancheFuji
             | C::BaseGoerli
+            | C::BaseSepolia
             | C::BinanceSmartChainTestnet
             | C::CantoTestnet
             | C::CronosTestnet
@@ -770,6 +775,9 @@ impl NamedChain {
 
             C::Base => ("https://api.basescan.org/api", "https://basescan.org"),
             C::BaseGoerli => ("https://api-goerli.basescan.org/api", "https://goerli.basescan.org"),
+            C::BaseSepolia => {
+                ("https://api-sepolia.basescan.org/api", "https://sepolia.basescan.org")
+            }
 
             C::ZkSync => {
                 ("https://zksync2-mainnet-explorer.zksync.io", "https://explorer.zksync.io")
@@ -846,6 +854,7 @@ impl NamedChain {
             | C::Mantle
             | C::MantleTestnet
             | C::BaseGoerli
+            | C::BaseSepolia
             | C::Gnosis
             | C::Scroll
             | C::ScrollSepolia => "ETHERSCAN_API_KEY",