diff --git a/package-lock.json b/package-lock.json
index 8f321226aa25..0018b952fe69 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2936,9 +2936,9 @@
             }
         },
         "acorn": {
-            "version": "6.0.0",
-            "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.0.0.tgz",
-            "integrity": "sha512-vvZ8PwswGTM15ZXyk3I+SvpTm8UbF8iRnGiU/f9TPU6By7K1XTvfvusFtoQt0WYycudFSYW2lrJDivhBlGovvQ==",
+            "version": "6.4.1",
+            "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.4.1.tgz",
+            "integrity": "sha512-ZVA9k326Nwrj3Cj9jlh3wGFutC2ZornPNARZwsNYqQYgN0EsV2d53w5RN/co65Ohn4sUAUtb1rSUAOD6XN9idA==",
             "dev": true
         },
         "acorn-dynamic-import": {
diff --git a/package.json b/package.json
index 5f9c408a01d8..bae543b1ba12 100644
--- a/package.json
+++ b/package.json
@@ -3030,7 +3030,7 @@
         "@types/winreg": "^1.2.30",
         "@types/ws": "^6.0.1",
         "@types/xml2js": "^0.4.2",
-        "acorn": "^6.0.0",
+        "acorn": "^6.4.1",
         "ansi-to-html": "^0.6.7",
         "awesome-typescript-loader": "^5.2.1",
         "babel-loader": "^8.0.3",