diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6d20c21b..853c8d1e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 ### Unreleased
 
+- Removed Cronos mainnet beta from `is_legacy` [1246](https://github.com/gakonst/ethers-rs/pull/1246)
 - Fix RLP decoding of `from` field for `Eip1559TransactionRequest` and
   `Eip2930TransactionRequest`, remove `Eip1559TransactionRequest` `sighash`
   method [1180](https://github.com/gakonst/ethers-rs/pull/1180)
diff --git a/ethers-core/src/types/chain.rs b/ethers-core/src/types/chain.rs
index 5397e78f..c05c1ed7 100644
--- a/ethers-core/src/types/chain.rs
+++ b/ethers-core/src/types/chain.rs
@@ -176,8 +176,7 @@ impl Chain {
                 Chain::BinanceSmartChain |
                 Chain::BinanceSmartChainTestnet |
                 Chain::Arbitrum |
-                Chain::ArbitrumTestnet |
-                Chain::Cronos,
+                Chain::ArbitrumTestnet,
         )
     }
 }