diff --git a/package.json b/package.json
index a00fb0d..ba16cea 100644
--- a/package.json
+++ b/package.json
@@ -38,6 +38,7 @@
     "pbf": "^3.0.0",
     "rbush": "^2.0.1",
     "simplify-js": "^1.2.1",
+    "string-width": "^2.0.0",
     "term-mouse": "^0.1.1",
     "userhome": "^1.0.0",
     "vector-tile": "^1.3.0",