diff --git a/ethers-contract/src/multicall/mod.rs b/ethers-contract/src/multicall/mod.rs
index be81bc2d..e120a87f 100644
--- a/ethers-contract/src/multicall/mod.rs
+++ b/ethers-contract/src/multicall/mod.rs
@@ -47,6 +47,7 @@ pub static MULTICALL_SUPPORTED_CHAIN_IDS: Lazy<[U256; 47]> = Lazy::new(|| {
         U256::from(Polygon),                  // Polygon
         U256::from(PolygonMumbai),            // PolygonMumbai
         U256::from(XDai),                     // XDai
+        U256::from(Chiado),                   // ChiadoTestnet
         U256::from(Avalanche),                // Avalanche
         U256::from(AvalancheFuji),            // AvalancheFuji
         U256::from(FantomTestnet),            // FantomTestnet
diff --git a/ethers-core/src/types/chain.rs b/ethers-core/src/types/chain.rs
index 4645b890..0b127aa5 100644
--- a/ethers-core/src/types/chain.rs
+++ b/ethers-core/src/types/chain.rs
@@ -32,6 +32,7 @@ pub enum Chain {
     Kovan = 42,
     #[strum(serialize = "xdai")]
     XDai = 100,
+    Chiado = 10200,
     Polygon = 137,
     Fantom = 250,
     Dev = 1337,
@@ -103,6 +104,7 @@ impl Chain {
             Chain::Goerli |
             Chain::Kovan |
             Chain::XDai |
+            Chain::Chiado |
             Chain::Sepolia |
             Chain::Moonbase |
             Chain::MoonbeamDev |
@@ -186,6 +188,9 @@ impl Chain {
             Chain::XDai => {
                 ("https://blockscout.com/xdai/mainnet/api", "https://blockscout.com/xdai/mainnet")
             }
+            Chain::Chiado => {
+                ("https://blockscout.chiadochain.net/api", "https://blockscout.chiadochain.net")
+            }
             Chain::Sokol => {
                 ("https://blockscout.com/poa/sokol/api", "https://blockscout.com/poa/sokol")
             }
@@ -230,6 +235,7 @@ impl fmt::Display for Chain {
             Chain::Goerli => "goerli",
             Chain::Kovan => "kovan",
             Chain::XDai => "xdai",
+            Chain::Chiado => "chiado",
             Chain::Polygon => "polygon",
             Chain::PolygonMumbai => "mumbai",
             Chain::Avalanche => "avalanche",
@@ -299,6 +305,7 @@ impl TryFrom<u64> for Chain {
             5 => Chain::Goerli,
             42 => Chain::Kovan,
             100 => Chain::XDai,
+            10200 => Chain::Chiado,
             137 => Chain::Polygon,
             1337 => Chain::Dev,
             31337 => Chain::AnvilHardhat,
@@ -359,6 +366,7 @@ impl FromStr for Chain {
             "goerli" => Chain::Goerli,
             "kovan" => Chain::Kovan,
             "xdai" => Chain::XDai,
+            "chiado" => Chain::Chiado,
             "polygon" => Chain::Polygon,
             "mumbai" | "polygon-mumbai" => Chain::PolygonMumbai,
             "avalanche" => Chain::Avalanche,
diff --git a/ethers-etherscan/src/lib.rs b/ethers-etherscan/src/lib.rs
index 4df3ebf2..9bd36992 100644
--- a/ethers-etherscan/src/lib.rs
+++ b/ethers-etherscan/src/lib.rs
@@ -103,6 +103,7 @@ impl Client {
                 std::env::var("FTMSCAN_API_KEY").or_else(|_| std::env::var("FANTOMSCAN_API_KEY"))?
             }
             Chain::XDai |
+            Chain::Chiado |
             Chain::Sepolia |
             Chain::Rsk |
             Chain::Sokol |