diff --git a/yarn.lock b/yarn.lock
index 3208dd4..03caca7 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -23,8 +23,8 @@ acorn-jsx@^4.1.1:
     acorn "^5.0.3"
 
 acorn@^5.0.3, acorn@^5.6.0:
-  version "5.7.3"
-  resolved "http://r.tnpm.oa.com/acorn/download/acorn-5.7.3.tgz#67aa231bf8812974b85235a96771eb6bd07ea279"
+  version "5.7.4"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.7.4.tgz#3e8d8a9947d0599a1796d10225d7432f4a4acf5e"
 
 ajv-keywords@^3.0.0:
   version "3.2.0"