diff --git a/package-lock.json b/package-lock.json
index e69a079..da1ae81 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -17,10 +17,10 @@
         "circomlibjs": "^0.1.1",
         "eslint": "^8.9.0",
         "eslint-config-prettier": "^8.3.0",
-        "mocha": "^9.2.1",
+        "mocha": "^9.2.2",
         "nyc": "^15.1.0",
         "ts-mocha": "^9.0.2",
-        "typescript": "^4.5.5"
+        "typescript": "^4.6.2"
       }
     },
     "node_modules/@ampproject/remapping": {
@@ -3623,9 +3623,9 @@
       }
     },
     "node_modules/mocha": {
-      "version": "9.2.1",
-      "resolved": "https://registry.npmjs.org/mocha/-/mocha-9.2.1.tgz",
-      "integrity": "sha512-T7uscqjJVS46Pq1XDXyo9Uvey9gd3huT/DD9cYBb4K2Xc/vbKRPUWK067bxDQRK0yIz6Jxk73IrnimvASzBNAQ==",
+      "version": "9.2.2",
+      "resolved": "https://registry.npmjs.org/mocha/-/mocha-9.2.2.tgz",
+      "integrity": "sha512-L6XC3EdwT6YrIk0yXpavvLkn8h+EU+Y5UcCHKECyMbdUIxyMuZj4bX4U9e1nvnvUUvQVsV2VHQr5zLdcUkhW/g==",
       "dev": true,
       "dependencies": {
         "@ungap/promise-all-settled": "1.1.2",
@@ -3641,9 +3641,9 @@
         "he": "1.2.0",
         "js-yaml": "4.1.0",
         "log-symbols": "4.1.0",
-        "minimatch": "3.0.4",
+        "minimatch": "4.2.1",
         "ms": "2.1.3",
-        "nanoid": "3.2.0",
+        "nanoid": "3.3.1",
         "serialize-javascript": "6.0.0",
         "strip-json-comments": "3.1.1",
         "supports-color": "8.1.1",
@@ -3678,15 +3678,15 @@
       }
     },
     "node_modules/mocha/node_modules/minimatch": {
-      "version": "3.0.4",
-      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
-      "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
+      "version": "4.2.1",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-4.2.1.tgz",
+      "integrity": "sha512-9Uq1ChtSZO+Mxa/CL1eGizn2vRn3MlLgzhT0Iz8zaY8NdvxvB0d5QdPFmCKf7JKA9Lerx5vRrnwO03jsSfGG9g==",
       "dev": true,
       "dependencies": {
         "brace-expansion": "^1.1.7"
       },
       "engines": {
-        "node": "*"
+        "node": ">=10"
       }
     },
     "node_modules/mocha/node_modules/ms": {
@@ -3723,9 +3723,9 @@
       "dev": true
     },
     "node_modules/nanoid": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.2.0.tgz",
-      "integrity": "sha512-fmsZYa9lpn69Ad5eDn7FMcnnSR+8R34W9qJEijxYhTbfOWzr22n1QxCMzXLK+ODyW2973V3Fux959iQoUxzUIA==",
+      "version": "3.3.1",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.1.tgz",
+      "integrity": "sha512-n6Vs/3KGyxPQd6uO0eH4Bv0ojGSUvuLlIHtC3Y0kEO23YRge8H9x1GCzLn28YX0H66pMkxuaeESFq4tKISKwdw==",
       "dev": true,
       "bin": {
         "nanoid": "bin/nanoid.cjs"
@@ -4833,9 +4833,9 @@
       }
     },
     "node_modules/typescript": {
-      "version": "4.5.5",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.5.5.tgz",
-      "integrity": "sha512-TCTIul70LyWe6IJWT8QSYeA54WQe8EjQFU4wY52Fasj5UKx88LNYKCgBEHcOMOrFF1rKGbD8v/xcNWVUq9SymA==",
+      "version": "4.6.2",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.6.2.tgz",
+      "integrity": "sha512-HM/hFigTBHZhLXshn9sN37H085+hQGeJHJ/X7LpBWLID/fbc2acUMfU+lGD98X81sKP+pFa9f0DZmCwB9GnbAg==",
       "dev": true,
       "bin": {
         "tsc": "bin/tsc",
@@ -7654,9 +7654,9 @@
       }
     },
     "mocha": {
-      "version": "9.2.1",
-      "resolved": "https://registry.npmjs.org/mocha/-/mocha-9.2.1.tgz",
-      "integrity": "sha512-T7uscqjJVS46Pq1XDXyo9Uvey9gd3huT/DD9cYBb4K2Xc/vbKRPUWK067bxDQRK0yIz6Jxk73IrnimvASzBNAQ==",
+      "version": "9.2.2",
+      "resolved": "https://registry.npmjs.org/mocha/-/mocha-9.2.2.tgz",
+      "integrity": "sha512-L6XC3EdwT6YrIk0yXpavvLkn8h+EU+Y5UcCHKECyMbdUIxyMuZj4bX4U9e1nvnvUUvQVsV2VHQr5zLdcUkhW/g==",
       "dev": true,
       "requires": {
         "@ungap/promise-all-settled": "1.1.2",
@@ -7672,9 +7672,9 @@
         "he": "1.2.0",
         "js-yaml": "4.1.0",
         "log-symbols": "4.1.0",
-        "minimatch": "3.0.4",
+        "minimatch": "4.2.1",
         "ms": "2.1.3",
-        "nanoid": "3.2.0",
+        "nanoid": "3.3.1",
         "serialize-javascript": "6.0.0",
         "strip-json-comments": "3.1.1",
         "supports-color": "8.1.1",
@@ -7692,9 +7692,9 @@
           "dev": true
         },
         "minimatch": {
-          "version": "3.0.4",
-          "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
-          "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
+          "version": "4.2.1",
+          "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-4.2.1.tgz",
+          "integrity": "sha512-9Uq1ChtSZO+Mxa/CL1eGizn2vRn3MlLgzhT0Iz8zaY8NdvxvB0d5QdPFmCKf7JKA9Lerx5vRrnwO03jsSfGG9g==",
           "dev": true,
           "requires": {
             "brace-expansion": "^1.1.7"
@@ -7730,9 +7730,9 @@
       "dev": true
     },
     "nanoid": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.2.0.tgz",
-      "integrity": "sha512-fmsZYa9lpn69Ad5eDn7FMcnnSR+8R34W9qJEijxYhTbfOWzr22n1QxCMzXLK+ODyW2973V3Fux959iQoUxzUIA==",
+      "version": "3.3.1",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.1.tgz",
+      "integrity": "sha512-n6Vs/3KGyxPQd6uO0eH4Bv0ojGSUvuLlIHtC3Y0kEO23YRge8H9x1GCzLn28YX0H66pMkxuaeESFq4tKISKwdw==",
       "dev": true
     },
     "natural-compare": {
@@ -8540,9 +8540,9 @@
       }
     },
     "typescript": {
-      "version": "4.5.5",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.5.5.tgz",
-      "integrity": "sha512-TCTIul70LyWe6IJWT8QSYeA54WQe8EjQFU4wY52Fasj5UKx88LNYKCgBEHcOMOrFF1rKGbD8v/xcNWVUq9SymA==",
+      "version": "4.6.2",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.6.2.tgz",
+      "integrity": "sha512-HM/hFigTBHZhLXshn9sN37H085+hQGeJHJ/X7LpBWLID/fbc2acUMfU+lGD98X81sKP+pFa9f0DZmCwB9GnbAg==",
       "dev": true
     },
     "uri-js": {
diff --git a/package.json b/package.json
index 792e12d..23f947e 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
   "scripts": {
     "test": "ts-mocha 'test/*.spec.ts' -s 10",
     "coverage": "nyc npm run test",
-    "build": "npx tsc",
+    "build": "tsc",
     "clean": "rm -rf lib/",
     "prepare": "npm run clean && npm run build",
     "lint": "eslint src"
@@ -29,12 +29,12 @@
     "@typescript-eslint/eslint-plugin": "^5.12.0",
     "@typescript-eslint/parser": "^5.12.0",
     "chai": "^4.2.0",
+    "circomlibjs": "^0.1.1",
     "eslint": "^8.9.0",
     "eslint-config-prettier": "^8.3.0",
+    "mocha": "^9.2.2",
     "nyc": "^15.1.0",
-    "mocha": "^9.2.1",
     "ts-mocha": "^9.0.2",
-    "typescript": "^4.5.5",
-    "circomlibjs": "^0.1.1"
+    "typescript": "^4.6.2"
   }
 }
diff --git a/tsconfig.json b/tsconfig.json
index 45eddb6..979d6d1 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -3,7 +3,7 @@
     "lib": [
       "es2019"
     ],
-    "target": "es2019",
+    "target": "es6",
     "module": "CommonJS",
     "moduleResolution": "Node",
     "outDir": "./lib",