diff --git a/package-lock.json b/package-lock.json
index c1b21f7..4a2148b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -48,9 +48,9 @@
       "integrity": "sha512-DT25xX/YgyPKiHFOpNuANIQIVvYEwCWXgK2jYYwqgaMrYE6+tq+DtmMwlD3drl6DJbUwtlIDnn0d7tIn/EbXBg=="
     },
     "acorn": {
-      "version": "6.1.1",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.1.1.tgz",
-      "integrity": "sha512-jPTiwtOxaHNaAPg/dmrJ/beuzLRnXtB0kQPQ8JpotKJgTB6rX6c8mlf315941pyjBSaPg8NHXS9fhP4u17DpGA=="
+      "version": "6.4.1",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.4.1.tgz",
+      "integrity": "sha512-ZVA9k326Nwrj3Cj9jlh3wGFutC2ZornPNARZwsNYqQYgN0EsV2d53w5RN/co65Ohn4sUAUtb1rSUAOD6XN9idA=="
     },
     "assertion-error": {
       "version": "1.1.0",
diff --git a/package.json b/package.json
index 2abee5a..8e16ae9 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
     "core-js": "^2.6.3",
     "lodash": "^4.17.19",
     "typescript": "^3.5.2",
-    "acorn": "^6.1.1",
+    "acorn": "^6.4.1",
     "estraverse": "^4.2.0",
     "@types/acorn": "^4.0.5",
     "@types/estraverse": "^0.0.6",