diff --git a/yarn.lock b/yarn.lock
index 38bedb5..8914f78 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -583,9 +583,9 @@ accepts@~1.3.4, accepts@~1.3.5, accepts@~1.3.7:
     negotiator "0.6.2"
 
 acorn@^6.2.0:
-  version "6.2.1"
-  resolved "https://repo.ptsecurity.ru/artifactory/api/npm/npmjs/acorn/-/acorn-6.2.1.tgz#3ed8422d6dec09e6121cc7a843ca86a330a86b51"
-  integrity sha1-PthCLW3sCeYSHMeoQ8qGozCoa1E=
+  version "6.4.1"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.4.1.tgz#531e58ba3f51b9dacb9a6646ca4debf5b14ca474"
+  integrity sha512-ZVA9k326Nwrj3Cj9jlh3wGFutC2ZornPNARZwsNYqQYgN0EsV2d53w5RN/co65Ohn4sUAUtb1rSUAOD6XN9idA==
 
 adm-zip@^0.4.9:
   version "0.4.13"