diff --git a/package-lock.json b/package-lock.json
index 6c11ca2..f4bdf67 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -22,7 +22,7 @@
         "@types/jest": "24.0.11",
         "@typescript-eslint/eslint-plugin": "1.4.2",
         "@typescript-eslint/parser": "1.4.2",
-        "acorn": "6.1.1",
+        "acorn": "6.4.1",
         "async": "2.6.2",
         "aws-sdk": "2.424.0",
         "cross-spawn": "6.0.5",
@@ -876,9 +876,9 @@
       "dev": true
     },
     "node_modules/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==",
       "dev": true,
       "bin": {
         "acorn": "bin/acorn"
@@ -10320,9 +10320,9 @@
       "dev": true
     },
     "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==",
       "dev": true
     },
     "acorn-dynamic-import": {
diff --git a/package.json b/package.json
index a883cda..3d3fee7 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "@types/jest": "24.0.11",
     "@typescript-eslint/eslint-plugin": "1.4.2",
     "@typescript-eslint/parser": "1.4.2",
-    "acorn": "6.1.1",
+    "acorn": "6.4.1",
     "async": "2.6.2",
     "aws-sdk": "2.424.0",
     "cross-spawn": "6.0.5",