diff --git a/yarn.lock b/yarn.lock
index 155ed50..0cb43d5 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -618,8 +618,8 @@ acorn-jsx@^5.0.0:
   resolved "https://registry.yarnpkg.com/acorn-jsx/-/acorn-jsx-5.0.0.tgz#958584ddb60990c02c97c1bd9d521fce433bb101"
 
 acorn@^6.0.2:
-  version "6.0.4"
-  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.0.4.tgz#77377e7353b72ec5104550aa2d2097a2fd40b754"
+  version "6.4.1"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.4.1.tgz#531e58ba3f51b9dacb9a6646ca4debf5b14ca474"
 
 ajv-keywords@^3.0.0:
   version "3.2.0"