diff --git a/yarn.lock b/yarn.lock
index 8bef41f..c7fd9a4 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -903,8 +903,8 @@ acorn-jsx@^5.0.0:
   resolved "https://registry.yarnpkg.com/acorn-jsx/-/acorn-jsx-5.0.1.tgz#32a064fd925429216a09b141102bfdd185fae40e"
 
 acorn@^6.0.2, acorn@^6.2.0:
-  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"
 
 ajv-errors@^1.0.0:
   version "1.0.1"