diff --git a/package.json b/package.json
index f1f05f5..e353a92 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
     "node": ">=10"
   },
   "scripts": {
-    "build": "tsc",
+    "build": "tsc --project ./tsconfig.production.json",
     "start": "ts-node src/tests.ts",
     "clean": "rm -rf lib",
     "prepare": "run-s clean build",
@@ -30,17 +30,18 @@
   "devDependencies": {
     "@tsconfig/node10": "^1.0.0",
     "@types/bn.js": "^4.11.6",
-    "@types/chai": "^4.2.14",
+    "@types/chai": "^4.2.17",
     "@types/jest": "^26.0.9",
     "@types/mocha": "^8.2.2",
     "@typescript-eslint/eslint-plugin": "^4.6.0",
     "@typescript-eslint/parser": "^4.6.0",
     "babel-eslint": "^10.0.3",
-    "chai": "^4.2.0",
+    "chai": "^4.3.4",
     "cross-env": "^7.0.2",
     "eslint": "^7.6.0",
     "eslint-config-prettier": "^6.11.0",
     "jest": "^26.6.3",
+    "mocha": "^8.3.2",
     "npm-run-all": "^4.1.5",
     "prettier": "^2.0.5",
     "ts-jest": "^26.2.0",
@@ -59,12 +60,10 @@
     "@project-serum/serum": "^0.13.20",
     "@project-serum/sol-wallet-adapter": "^0.1.4",
     "@solana/spl-token": "0.0.13",
-    "@solana/web3.js": "^0.95.0",
+    "@solana/web3.js": "^0.90.0",
     "bn.js": "^5.1.2",
     "borsh": "https://github.com/defactojob/borsh-js#field-mapper",
-    "buffer-layout": "^1.2.0",
-    "dotenv": "^10.0.0",
-    "mocha": "^8.4.0"
+    "buffer-layout": "^1.2.0"
   },
   "browserslist": [
     ">0.2%",
diff --git a/tests/test_utils.ts b/tests/test_utils.ts
index 74b3922..638dcfb 100644
--- a/tests/test_utils.ts
+++ b/tests/test_utils.ts
@@ -4,7 +4,7 @@ import { Market, TokenInstructions, OpenOrders, Orderbook } from '@project-serum
 import { token } from '@project-serum/common';
 import { u64, NATIVE_MINT } from "@solana/spl-token";
 import { sleep } from '../src/utils';
-import fs from 'fs';
+
 console.log = function () {}; // NOTE: Disable all unnecessary logging
 
 const FAUCET_PROGRAM_ID = new PublicKey(
diff --git a/tsconfig.production.json b/tsconfig.production.json
new file mode 100644
index 0000000..8083ad6
--- /dev/null
+++ b/tsconfig.production.json
@@ -0,0 +1,17 @@
+{
+  "extends": "@tsconfig/node10/tsconfig.json",
+
+  "compilerOptions": {
+    "outDir": "./lib",
+    "allowJs": true,
+    "checkJs": true,
+    "declaration": true,
+    "declarationMap": true,
+    "noImplicitAny": false,
+    "resolveJsonModule": true,
+    "sourceMap": true,
+    "jsx": "react"
+  },
+  "include": ["./src/**/*"],
+  "exclude": ["./src/**/*.test.js", "node_modules", "**/node_modules"]
+}