diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0aa8a7c659c..e33c287046a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -62,6 +62,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * [#6858](https://github.com/osmosis-labs/osmosis/pull/6858) Merge mempool improvements from v20
 * [#6861](https://github.com/osmosis-labs/osmosis/pull/6861) Protorev address added to reduced taker fee whitelist
 * [#6890](https://github.com/osmosis-labs/osmosis/pull/6890) Enable arb filter for affiliate swap contract
+* [#6891](https://github.com/osmosis-labs/osmosis/pull/6891) Enable 1559 mempool by default.
 
 ### API Breaks
 
diff --git a/cmd/osmosisd/cmd/root.go b/cmd/osmosisd/cmd/root.go
index 572d8ae15da..6c613248b97 100644
--- a/cmd/osmosisd/cmd/root.go
+++ b/cmd/osmosisd/cmd/root.go
@@ -465,7 +465,7 @@ arbitrage-min-gas-fee = ".005"
 min-gas-price-for-high-gas-tx = ".0025"
 
 # This parameter enables EIP-1559 like fee market logic in the mempool
-adaptive-fee-enabled = "false"
+adaptive-fee-enabled = "true"
 `
 
 	return OsmosisAppTemplate, OsmosisAppCfg
diff --git a/x/txfees/types/options.go b/x/txfees/types/options.go
index c08c1b73fac..e39b79d0264 100644
--- a/x/txfees/types/options.go
+++ b/x/txfees/types/options.go
@@ -23,7 +23,7 @@ var (
 	DefaultMinGasPriceForHighGasTx = osmomath.ZeroDec()
 	DefaultMaxGasWantedPerTx       = uint64(25 * 1000 * 1000)
 	DefaultHighGasTxThreshold      = uint64(1 * 1000 * 1000)
-	DefaultMempool1559Enabled      = false
+	DefaultMempool1559Enabled      = true
 )
 
 var GlobalMempool1559Enabled = false