diff --git a/yarn.lock b/yarn.lock
old mode 100755
new mode 100644
index 9aa9b4b..327f910
--- a/yarn.lock
+++ b/yarn.lock
@@ -369,11 +369,6 @@ end-of-stream@^1.1.0, end-of-stream@^1.4.1:
   dependencies:
     once "^1.4.0"
 
-es6-promise@^4.2.5:
-  version "4.2.8"
-  resolved "https://registry.yarnpkg.com/es6-promise/-/es6-promise-4.2.8.tgz#4eb21594c972bc40553d276e510539143db53e0a"
-  integrity sha512-HJDGx5daxeIvxdBxvG2cb9g4tEvwIk3i8+nhX0yGrYmZUzbkdg8QbDevheDB8gd0//uPj4c1EQua8Q+MViT0/w==
-
 escape-goat@^2.0.0:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/escape-goat/-/escape-goat-2.1.1.tgz#1b2dc77003676c457ec760b2dc68edb648188675"
@@ -664,11 +659,9 @@ lazystream@^1.0.0:
     readable-stream "^2.0.5"
 
 locutus@^2.0.11:
-  version "2.0.11"
-  resolved "https://registry.yarnpkg.com/locutus/-/locutus-2.0.11.tgz#83f85109971fd3dd620482a04381916e4a31d4f0"
-  integrity sha512-C0q1L38lK5q1t+wE0KY21/9szrBHxye6o2z5EJzU+5B79tubNOC+nLAEzTTn1vPUGoUuehKh8kYKqiVUTWRyaQ==
-  dependencies:
-    es6-promise "^4.2.5"
+  version "2.0.15"
+  resolved "https://registry.yarnpkg.com/locutus/-/locutus-2.0.15.tgz#d75b9100713aaaf30be8b38ed6543910498c0db0"
+  integrity sha512-2xWC4RkoAoCVXEb/stzEgG1TNgd+mrkLBj6TuEDNyUoKeQ2XzDTyJUC23sMiqbL6zJmJSP3w59OZo+zc4IBOmA==
 
 lodash.defaults@^4.2.0:
   version "4.2.0"