diff --git a/yarn.lock b/yarn.lock
index 6db24fa..0df33d5 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -21,8 +21,8 @@ accepts@~1.3.3:
     negotiator "0.6.1"
 
 acorn@^5.1.1:
-  version "5.1.2"
-  resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.1.2.tgz#911cb53e036807cf0fa778dc5d370fbd864246d7"
+  version "5.7.4"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.7.4.tgz#3e8d8a9947d0599a1796d10225d7432f4a4acf5e"
 
 after@0.8.1:
   version "0.8.1"