diff --git a/package-lock.json b/package-lock.json
index 390ec67..4d30bbe 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -59,6 +59,12 @@
         "indent-string": "^4.0.0"
       }
     },
+    "antlr4ts-cli": {
+      "version": "0.5.0-alpha.3",
+      "resolved": "https://registry.npmjs.org/antlr4ts-cli/-/antlr4ts-cli-0.5.0-alpha.3.tgz",
+      "integrity": "sha512-i6oyxfaXU6qnw4HgyeSIsOLlsvT7zU3vmenoJKFNVFP1QNodtJMZYpnyxc8TmOFpJs7fEoWanLavSSDEmcCZBQ==",
+      "dev": true
+    },
     "arr-diff": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/arr-diff/-/arr-diff-4.0.0.tgz",
diff --git a/package.json b/package.json
index 90d6f50..ba476ea 100644
--- a/package.json
+++ b/package.json
@@ -17,6 +17,7 @@
   },
   "homepage": "https://github.com/brucificus/vb6-antlr4-typescript#readme",
   "devDependencies": {
+    "antlr4ts-cli": "^0.5.0-alpha.3",
     "cpy-cli": "^3.1.0",
     "rimraf": "^3.0.2"
   }