diff --git a/yarn.lock b/yarn.lock
index 9e9ac58..3e6b4ed 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -108,8 +108,8 @@ accepts@1.3.3:
     negotiator "0.6.1"
 
 acorn@^5.2.1:
-  version "5.3.0"
-  resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.3.0.tgz#7446d39459c54fb49a80e6ee6478149b940ec822"
+  version "5.7.4"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.7.4.tgz#3e8d8a9947d0599a1796d10225d7432f4a4acf5e"
 
 adm-zip@0.4.4:
   version "0.4.4"