diff --git a/yarn.lock b/yarn.lock
old mode 100755
new mode 100644
index 0249e27..971868f
--- a/yarn.lock
+++ b/yarn.lock
@@ -1154,9 +1154,9 @@ keccak@^1.0.2:
     safe-buffer "^5.1.0"
 
 keypair@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/keypair/-/keypair-1.0.1.tgz#7603719270afb6564ed38a22087a06fc9aa4ea1b"
-  integrity sha1-dgNxknCvtlZO04oiCHoG/Jqk6hs=
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/keypair/-/keypair-1.0.4.tgz#a749a45f388593f3950f18b3757d32a93bd8ce83"
+  integrity sha512-zwhgOhhniaL7oxMgUMKKw5219PWWABMO+dgMnzJOQ2/5L3XJtTJGhW2PEXlxXj9zaccdReZJZ83+4NPhVfNVDg==
 
 klaw@^1.0.0:
   version "1.3.1"