diff --git a/executor/package.json b/executor/package.json
index c3db3838..18fcf0cd 100644
--- a/executor/package.json
+++ b/executor/package.json
@@ -1,7 +1,7 @@
 {
 	"name": "@acala-network/chopsticks-executor",
 	"description": "Chopsticks executor",
-	"version": "0.8.0-0",
+	"version": "0.8.0-1",
 	"license": "Apache-2.0",
 	"repository": {
 		"type": "git",
diff --git a/packages/chopsticks/package.json b/packages/chopsticks/package.json
index 78f90f7d..75f641e0 100644
--- a/packages/chopsticks/package.json
+++ b/packages/chopsticks/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "@acala-network/chopsticks",
-	"version": "0.8.0-0",
+	"version": "0.8.0-1",
 	"author": "Bryan Chen <xlchen1291@gmail.com>",
 	"license": "Apache-2.0",
 	"bin": "./chopsticks.js",
diff --git a/packages/core/package.json b/packages/core/package.json
index 18940d78..3f8122ef 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "@acala-network/chopsticks-core",
-	"version": "0.8.0-0",
+	"version": "0.8.0-1",
 	"author": "Bryan Chen <xlchen1291@gmail.com>",
 	"license": "Apache-2.0",
 	"scripts": {
diff --git a/packages/core/tsconfig.json b/packages/core/tsconfig.json
index a9745a13..eab4c3cb 100644
--- a/packages/core/tsconfig.json
+++ b/packages/core/tsconfig.json
@@ -3,9 +3,8 @@
 	"compilerOptions": {
 		"outDir": "lib",
 		"rootDir": "src",
-		"target": "es2015",
-		"lib": ["es5", "dom", "dom.iterable"],
-		"module": "es2020",
+		"target": "es2016",
+		"lib": ["es6", "dom", "dom.iterable"],
 		"isolatedModules": true
 	},
 	"include": ["src/**/*"],
diff --git a/packages/testing/package.json b/packages/testing/package.json
index 58a83310..8351a331 100644
--- a/packages/testing/package.json
+++ b/packages/testing/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "@acala-network/chopsticks-testing",
-	"version": "0.8.0-0",
+	"version": "0.8.0-1",
 	"author": "Bryan Chen <xlchen1291@gmail.com>",
 	"license": "Apache-2.0",
 	"scripts": {