diff --git a/LICENSE b/LICENSE
index 9bcf13e..f5d8045 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 ISC License
 
-Copyright (c) 2018, Mapbox
+Copyright (c) 2022, Mapbox
 
 Permission to use, copy, modify, and/or distribute this software for any purpose
 with or without fee is hereby granted, provided that the above copyright notice
diff --git a/package.json b/package.json
index 1313876..f18c285 100644
--- a/package.json
+++ b/package.json
@@ -6,6 +6,7 @@
   "type": "module",
   "exports": "./index.js",
   "types": "index.d.ts",
+  "sideEffects": false,
   "files": [
     "index.js",
     "index.d.ts"