diff --git a/package-lock.json b/package-lock.json
index 94b29d0..b3ec120 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1124,9 +1124,9 @@
             }
         },
         "acorn": {
-            "version": "6.2.1",
-            "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.2.1.tgz",
-            "integrity": "sha512-JD0xT5FCRDNyjDda3Lrg/IxFscp9q4tiYtxE1/nOzlKCk7hIRuYjhq1kCNkbPjMRMZuFq20HNQn1I9k8Oj0E+Q==",
+            "version": "6.4.1",
+            "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.4.1.tgz",
+            "integrity": "sha512-ZVA9k326Nwrj3Cj9jlh3wGFutC2ZornPNARZwsNYqQYgN0EsV2d53w5RN/co65Ohn4sUAUtb1rSUAOD6XN9idA==",
             "dev": true
         },
         "adjust-sourcemap-loader": {
diff --git a/yarn.lock b/yarn.lock
index d59158b..0ae84b1 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -779,8 +779,8 @@ accepts@~1.3.4, accepts@~1.3.5, accepts@~1.3.7:
     negotiator "0.6.2"
 
 acorn@^6.2.1:
-  version "6.2.1"
-  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.2.1.tgz#3ed8422d6dec09e6121cc7a843ca86a330a86b51"
+  version "6.4.1"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.4.1.tgz#531e58ba3f51b9dacb9a6646ca4debf5b14ca474"
 
 adjust-sourcemap-loader@^1.1.0:
   version "1.2.0"