diff --git a/networks/devnet/init-genesis.sh b/networks/devnet/init-genesis.sh
index 91d2eacd..a18b89f1 100755
--- a/networks/devnet/init-genesis.sh
+++ b/networks/devnet/init-genesis.sh
@@ -88,7 +88,7 @@ for ((i=0; i<$NUM_NODES; i++)) do
     sed -i '/\[json-rpc\]/,/^\[/ s/address = "127.0.0.1:8545"/address = "0.0.0.0:8545"/' "$APP_TOML"
 
     # Set evm tracer to json
-    sed -in-place='' 's/tracer = ""/tracer = "json"/g' "$APP_TOML"
+    # sed -in-place='' 's/tracer = ""/tracer = "json"/g' "$APP_TOML"
 
     # Enable full error trace to be returned on tx failure
     sed -in-place='' '/iavl-cache-size/a\
diff --git a/networks/testnet/deploy.sh b/networks/testnet/deploy.sh
index 3df07e49..33745a39 100755
--- a/networks/testnet/deploy.sh
+++ b/networks/testnet/deploy.sh
@@ -62,7 +62,7 @@ NUM_NODES=${#IPS[@]}
 
 # Install dependent libraries and binary
 for ((i=0; i<$NUM_NODES; i++)) do
-    ssh $PEM_FLAG ubuntu@${IPS[$i]} "rm -rf 0g-chain; git clone https://github.com/0glabs/0g-chain.git; cd 0g-chain; git checkout v0.2.2; ./networks/testnet/install.sh"
+    ssh $PEM_FLAG ubuntu@${IPS[$i]} "rm -rf 0g-chain; git clone https://github.com/0glabs/0g-chain.git; cd 0g-chain; git checkout v0.2.3; ./networks/testnet/install.sh"
 done
 
 # Create genesis config on node0
diff --git a/networks/testnet/init-genesis.sh b/networks/testnet/init-genesis.sh
index 0000df53..6c72fa77 100755
--- a/networks/testnet/init-genesis.sh
+++ b/networks/testnet/init-genesis.sh
@@ -88,7 +88,7 @@ for ((i=0; i<$NUM_NODES; i++)) do
     sed -i '/\[json-rpc\]/,/^\[/ s/address = "127.0.0.1:8545"/address = "0.0.0.0:8545"/' "$APP_TOML"
 
     # Set evm tracer to json
-    sed -in-place='' 's/tracer = ""/tracer = "json"/g' "$APP_TOML"
+    # sed -in-place='' 's/tracer = ""/tracer = "json"/g' "$APP_TOML"
 
     # Enable full error trace to be returned on tx failure
     sed -in-place='' '/iavl-cache-size/a\