diff --git a/package.json b/package.json
index f845a27..093748b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "inequality-grammar",
-  "version": "1.3.0",
+  "version": "1.3.1",
   "description": "",
   "main": "dist/inequality-grammar.js",
   "files": [
@@ -9,7 +9,8 @@
   "scripts": {
     "dev": "webpack --watch --mode development",
     "build": "webpack --mode production",
-    "test": "jest"
+    "test": "jest",
+    "prepublishOnly": "npm run build"
   },
   "repository": {
     "type": "git",