diff --git a/dist/lib/collections.js b/dist/lib/collections.js
index 9ebf8a49..7dd257a1 100644
--- a/dist/lib/collections.js
+++ b/dist/lib/collections.js
@@ -198,10 +198,12 @@
       key: {
         hash: 1 },
 
-      unique: true }],
+      unique: true }] },
 
 
-    TxPool: [
+
+  TxPool: {
+    indexes: [
     {
       key: {
         timestamp: -1 } }] },
@@ -209,6 +211,7 @@
 
 
 
+
   PendingTxs: {
     indexes: [
     {
diff --git a/dist/lib/types.js b/dist/lib/types.js
index 615be39e..ea481157 100644
--- a/dist/lib/types.js
+++ b/dist/lib/types.js
@@ -83,7 +83,9 @@ const EVMversions = [
 'spuriousDragon',
 'byzantium',
 'constantinople',
-'petersburg'];exports.EVMversions = EVMversions;
+'petersburg',
+'istanbul'];exports.EVMversions = EVMversions;
+
 
 const bitcoinNetworks = {
   TESTNET: 'testnet',
diff --git a/package-lock.json b/package-lock.json
index 6ac05e96..e420f166 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "rsk-explorer-api",
-  "version": "1.0.7",
+  "version": "1.0.8",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -6449,7 +6449,7 @@
       }
     },
     "rsk-contract-parser": {
-      "version": "git+https://github.com/rsksmart/rsk-contract-parser.git#cbd07a4ceb7ae840426970d6155b877bb00bcb70",
+      "version": "git+https://github.com/rsksmart/rsk-contract-parser.git#e793c04ea649f5f8ed43742bb8c9903be83a9998",
       "from": "git+https://github.com/rsksmart/rsk-contract-parser.git",
       "requires": {
         "bs58": "^4.0.1",
diff --git a/package.json b/package.json
index df57dd6e..6dd81bce 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "rsk-explorer-api",
-  "version": "1.0.7",
+  "version": "1.0.8",
   "description": "",
   "main": "index.js",
   "scripts": {
diff --git a/public/swagger.json b/public/swagger.json
index 22ff293c..458dab70 100644
--- a/public/swagger.json
+++ b/public/swagger.json
@@ -1,7 +1,7 @@
 {
   "info": {
     "title": "rsk-explorer-api",
-    "version": "1.0.7",
+    "version": "1.0.8",
     "description": "explorer API Documentation"
   },
   "swagger": "2.0",