diff --git a/package.json b/package.json
index f91b6dbb0..b331b4df6 100644
--- a/package.json
+++ b/package.json
@@ -74,7 +74,7 @@
     "@rollup/plugin-babel": "^5.2.2",
     "@rollup/plugin-commonjs": "^17.0.0",
     "@rollup/plugin-node-resolve": "^11.0.0",
-    "rollup-plugin-terser": "^4.0.4",
+    "rollup-plugin-terser": "^5.3.1",
     "sinon": "1.17.7",
     "tslint": "^5.12.1",
     "typescript": "^3.6.4",