diff --git a/CHANGELOG.md b/CHANGELOG.md
index 87a8ada531..e3b380847e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -37,6 +37,10 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ## Unreleased
 
+### State Machine Breaking
+
+* (evm, ante) [tharsis#620](https://github.com/tharsis/ethermint/pull/620) Add fee market field to EVM `Keeper` and `AnteHandler`.
+
 ### API Breaking
 
 * (rpc) [tharsis#400](https://github.com/tharsis/ethermint/issues/400) Restructure JSON-RPC directory and rename server config