diff --git a/CHANGELOG.md b/CHANGELOG.md
index d6cddf87a6..f347d460e1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@
 
 ## v1.5.2
 
+* [#1892](https://github.com/crypto-org-chain/cronos/pull/1892) fix: disable memiavl cache when optimistic execution is enabled.
 * [#1893](https://github.com/crypto-org-chain/cronos/pull/1893) Normalize cache validator queue key to be UTC.
 * [#1850](https://github.com/crypto-org-chain/cronos/pull/1850) Optimize staking endblocker execution by caching queue entries from iterators. Upgrade RocksDB to `v10.4.2` and enable asyncIO.
 
diff --git a/app/app.go b/app/app.go
index b24017baff..dc59355408 100644
--- a/app/app.go
+++ b/app/app.go
@@ -410,16 +410,19 @@ func New(
 	})
 
 	blockSTMEnabled := cast.ToString(appOpts.Get(srvflags.EVMBlockExecutor)) == "block-stm"
+	optimisticExecutionDisabled := cast.ToString(appOpts.Get(srvflags.EVMOptimisticExecution)) == "disable"
 
 	var cacheSize int
-	if !blockSTMEnabled {
-		// only enable memiavl cache if block-stm is not enabled, because it's not concurrency-safe.
+	if !blockSTMEnabled && optimisticExecutionDisabled {
+		// only enable memiavl cache if neither block-stm nor optimistic execution is enabled, because it's not concurrency-safe.
 		cacheSize = cast.ToInt(appOpts.Get(memiavlstore.FlagCacheSize))
 	}
 	baseAppOptions = memiavlstore.SetupMemIAVL(logger, homePath, appOpts, false, false, cacheSize, baseAppOptions)
 
-	// enable optimistic execution
-	baseAppOptions = append(baseAppOptions, baseapp.SetOptimisticExecution())
+	// The default value of optimisticExecution is enabled.
+	if !optimisticExecutionDisabled {
+		baseAppOptions = append(baseAppOptions, baseapp.SetOptimisticExecution())
+	}
 
 	// NOTE we use custom transaction decoder that supports the sdk.Tx interface instead of sdk.StdTx
 	bApp := baseapp.NewBaseApp(Name, logger, db, txConfig.TxDecoder(), baseAppOptions...)
diff --git a/go.mod b/go.mod
index ac6721c323..73c850b13e 100644
--- a/go.mod
+++ b/go.mod
@@ -306,7 +306,7 @@ replace (
 	// release/v1.15
 	github.com/ethereum/go-ethereum => github.com/crypto-org-chain/go-ethereum v1.10.20-0.20250815065500-a4fbafcae0dd
 	// release/v0.22.x
-	github.com/evmos/ethermint => github.com/crypto-org-chain/ethermint v0.22.1-0.20251023055101-b88263e5b552
+	github.com/evmos/ethermint => github.com/crypto-org-chain/ethermint v0.22.1-0.20251028053456-6d16dd884c83
 	// Fix upstream GHSA-h395-qcrw-5vmq and GHSA-3vp4-m3rf-835h vulnerabilities.
 	// TODO Remove it: https://github.com/cosmos/cosmos-sdk/issues/10409
 	github.com/gin-gonic/gin => github.com/gin-gonic/gin v1.9.0
diff --git a/go.sum b/go.sum
index 42b9302a83..2e13f3ba2e 100644
--- a/go.sum
+++ b/go.sum
@@ -912,8 +912,8 @@ github.com/crypto-org-chain/cosmos-sdk/store v0.0.0-20241217090828-cfbca9fe8254
 github.com/crypto-org-chain/cosmos-sdk/store v0.0.0-20241217090828-cfbca9fe8254/go.mod h1:8DwVTz83/2PSI366FERGbWSH7hL6sB7HbYp8bqksNwM=
 github.com/crypto-org-chain/cosmos-sdk/x/tx v0.0.0-20241217090828-cfbca9fe8254 h1:JzLOFRiKsDtLJt5h0M0jkEIPDKvFFyja7VEp7gG6O9U=
 github.com/crypto-org-chain/cosmos-sdk/x/tx v0.0.0-20241217090828-cfbca9fe8254/go.mod h1:V6DImnwJMTq5qFjeGWpXNiT/fjgE4HtmclRmTqRVM3w=
-github.com/crypto-org-chain/ethermint v0.22.1-0.20251023055101-b88263e5b552 h1:CsOD4gUc6gd7S/J2QghCualcC/Rb1JNdgXjBgMtPbQw=
-github.com/crypto-org-chain/ethermint v0.22.1-0.20251023055101-b88263e5b552/go.mod h1:jLZdUMGYqWOuitjw8+U3HcM+BcFeBkoNJYPvRb9r76U=
+github.com/crypto-org-chain/ethermint v0.22.1-0.20251028053456-6d16dd884c83 h1:ouTg/5YRD0ne5ZJlKwAGrIGvBsu2rQoHEetWesqzglw=
+github.com/crypto-org-chain/ethermint v0.22.1-0.20251028053456-6d16dd884c83/go.mod h1:jLZdUMGYqWOuitjw8+U3HcM+BcFeBkoNJYPvRb9r76U=
 github.com/crypto-org-chain/go-block-stm v0.0.0-20241213061541-7afe924fb4a6 h1:6KPEi8dWkDSBddQb4NAvEXmNnTXymF3yVeTaT4Hz1iU=
 github.com/crypto-org-chain/go-block-stm v0.0.0-20241213061541-7afe924fb4a6/go.mod h1:iwQTX9xMX8NV9k3o2BiWXA0SswpsZrDk5q3gA7nWYiE=
 github.com/crypto-org-chain/go-ethereum v1.10.20-0.20250815065500-a4fbafcae0dd h1:ebSnzvM9yKVGFjvoGly7LFQQCS2HuOWMCvQyByJ52Gs=
diff --git a/gomod2nix.toml b/gomod2nix.toml
index 3bf6c272ae..edaa8bc353 100644
--- a/gomod2nix.toml
+++ b/gomod2nix.toml
@@ -315,8 +315,8 @@ schema = 3
     version = "v0.2.2"
     hash = "sha256-0MLfSJKdeK3Z7tWAXTdzwB4091dmyxIX38S5SKH5QAw="
   [mod."github.com/evmos/ethermint"]
-    version = "v0.22.1-0.20251023055101-b88263e5b552"
-    hash = "sha256-tqoHuxVFUUDuCms6L4M0IluA1evydzxRjeLp+3mlrHk="
+    version = "v0.22.1-0.20251028053456-6d16dd884c83"
+    hash = "sha256-ZMT6uziS698fGQ+tLHcu0WZVTG9iBxv/odrpaxgVx0M="
     replaced = "github.com/crypto-org-chain/ethermint"
   [mod."github.com/fatih/color"]
     version = "v1.17.0"