diff --git a/yarn.lock b/yarn.lock
index 7bffd0c..1ca7e5e 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -645,8 +645,8 @@ abbrev@1:
   resolved "https://registry.npmjs.org/abbrev/-/abbrev-1.1.1.tgz#f8f2c887ad10bf67f634f005b6987fed3179aac8"
 
 acorn@^6.2.1:
-  version "6.3.0"
-  resolved "https://registry.npmjs.org/acorn/-/acorn-6.3.0.tgz#0087509119ffa4fc0a0041d1e93a417e68cb856e"
+  version "6.4.1"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.4.1.tgz#531e58ba3f51b9dacb9a6646ca4debf5b14ca474"
 
 ansi-regex@^2.0.0:
   version "2.1.1"