diff --git a/package.json b/package.json
index a052a9f..51bc348 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@blockworks-foundation/mango-client",
-  "version": "2.1.4",
+  "version": "2.1.5",
   "description": "Library for interacting with Mango Markets' solana smart contracts.",
   "repository": "blockworks-foundation/mango-client-ts",
   "author": {
diff --git a/tsconfig.production.json b/tsconfig.production.json
index 8083ad6..dd52718 100644
--- a/tsconfig.production.json
+++ b/tsconfig.production.json
@@ -2,6 +2,8 @@
   "extends": "@tsconfig/node10/tsconfig.json",
 
   "compilerOptions": {
+    "target": "es6",
+    "lib": ["es2019"],
     "outDir": "./lib",
     "allowJs": true,
     "checkJs": true,