diff --git a/yarn.lock b/yarn.lock
index ae8c9d5..ebf78df 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -431,7 +431,7 @@ are-we-there-yet@~1.1.2:
 
 argparse@^1.0.7:
   version "1.0.10"
-  resolved "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz#bcd6791ea5ae09725e17e5ad988134cd40b3d911"
+  resolved "https://registry.yarnpkg.com/argparse/-/argparse-1.0.10.tgz#bcd6791ea5ae09725e17e5ad988134cd40b3d911"
   dependencies:
     sprintf-js "~1.0.2"
 
@@ -956,8 +956,8 @@ escape-string-regexp@^1.0.2, escape-string-regexp@^1.0.5:
   resolved "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
 
 esprima@^4.0.0:
-  version "4.0.0"
-  resolved "https://registry.npmjs.org/esprima/-/esprima-4.0.0.tgz#4499eddcd1110e0b218bacf2fa7f7f59f55ca804"
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/esprima/-/esprima-4.0.1.tgz#13b04cdb3e6c5d19df91ab6987a8695619b0aa71"
 
 espurify@^1.6.0:
   version "1.8.0"
@@ -1594,8 +1594,8 @@ js-tokens@^3.0.2:
   resolved "https://registry.npmjs.org/js-tokens/-/js-tokens-3.0.2.tgz#9866df395102130e38f7f996bceb65443209c25b"
 
 js-yaml@^3.7.0:
-  version "3.11.0"
-  resolved "https://registry.npmjs.org/js-yaml/-/js-yaml-3.11.0.tgz#597c1a8bd57152f26d622ce4117851a51f5ebaef"
+  version "3.14.1"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.14.1.tgz#dae812fdb3825fa306609a8717383c50c36a0537"
   dependencies:
     argparse "^1.0.7"
     esprima "^4.0.0"
@@ -2430,7 +2430,7 @@ split-string@^3.0.1, split-string@^3.0.2:
 
 sprintf-js@~1.0.2:
   version "1.0.3"
-  resolved "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.0.3.tgz#04e6926f662895354f3dd015203633b857297e2c"
+  resolved "https://registry.yarnpkg.com/sprintf-js/-/sprintf-js-1.0.3.tgz#04e6926f662895354f3dd015203633b857297e2c"
 
 sshpk@^1.7.0:
   version "1.14.1"