diff --git a/yarn.lock b/yarn.lock
index 8a5420f..7a7a962 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -792,8 +792,8 @@ acorn-dynamic-import@^4.0.0:
   resolved "https://registry.yarnpkg.com/acorn-dynamic-import/-/acorn-dynamic-import-4.0.0.tgz#482210140582a36b83c3e342e1cfebcaa9240948"
 
 acorn@^6.0.5:
-  version "6.1.0"
-  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.1.0.tgz#b0a3be31752c97a0f7013c5f4903b71a05db6818"
+  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"