diff --git a/yarn.lock b/yarn.lock
index 7f5df8e..cba399f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -299,8 +299,8 @@ acorn-jsx@^5.0.0:
   resolved "https://registry.npm.taobao.org/acorn-jsx/download/acorn-jsx-5.0.1.tgz#32a064fd925429216a09b141102bfdd185fae40e"
 
 acorn@^6.0.2, acorn@^6.0.5, acorn@^6.0.7:
-  version "6.1.1"
-  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.1.1.tgz#7d25ae05bb8ad1f9b699108e1094ecd7884adc1f"
+  version "6.4.1"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.4.1.tgz#531e58ba3f51b9dacb9a6646ca4debf5b14ca474"
 
 agent-base@4, agent-base@^4.1.0, agent-base@^4.2.0:
   version "4.3.0"