diff --git a/rollup.config.js b/rollup.config.js
index cc9604ef..248bd3b2 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -45,7 +45,7 @@ export default [
         configFile: false,
         presets: [["@babel/preset-env", { modules: false, targets: { ie: "8" } }]],
       }),
-      terser({ output: { comments: false }, ie8: true, safari10: true }),
+      terser({ format: { comments: false }, ie8: true, safari10: true }),
     ],
   },
   // Declaration