diff --git a/yarn.lock b/yarn.lock
index b2ca9f6..0887ca0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5198,6 +5198,11 @@ espree@^6.1.2:
     acorn-jsx "^5.1.0"
     eslint-visitor-keys "^1.1.0"
 
+esprima@^2.6.0:
+  version "2.7.3"
+  resolved "https://registry.yarnpkg.com/esprima/-/esprima-2.7.3.tgz#96e3b70d5779f6ad49cd032673d1c312767ba581"
+  integrity sha1-luO3DVd59q1JzQMmc9HDEnZ7pYE=
+
 esprima@^3.1.3:
   version "3.1.3"
   resolved "https://registry.npmjs.org/esprima/-/esprima-3.1.3.tgz#fdca51cee6133895e3c88d535ce49dbff62a4633"
@@ -7559,7 +7564,7 @@ js-tokens@^3.0.2:
   resolved "https://registry.npmjs.org/js-tokens/-/js-tokens-3.0.2.tgz#9866df395102130e38f7f996bceb65443209c25b"
   integrity sha1-mGbfOVECEw449/mWvOtlRDIJwls=
 
-js-yaml@3.13.1, js-yaml@^3.13.1, js-yaml@~3.7.0:
+js-yaml@^3.13.1:
   version "3.13.1"
   resolved "https://registry.npmjs.org/js-yaml/-/js-yaml-3.13.1.tgz#aff151b30bfdfa8e49e05da22e7415e9dfa37847"
   integrity sha512-YfbcO7jXDdyj0DGxYVSlSeQNHbD7XPWvrVWeVUujrQEoZzWJIRrCPoyk6kL6IAjAG2IolMK4T0hNUe0HOUs5Jw==
@@ -7567,6 +7572,14 @@ js-yaml@3.13.1, js-yaml@^3.13.1, js-yaml@~3.7.0:
     argparse "^1.0.7"
     esprima "^4.0.0"
 
+js-yaml@~3.7.0:
+  version "3.7.0"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.7.0.tgz#5c967ddd837a9bfdca5f2de84253abe8a1c03b80"
+  integrity sha1-XJZ93YN6m/3KXy3oQlOr6KHAO4A=
+  dependencies:
+    argparse "^1.0.7"
+    esprima "^2.6.0"
+
 jsbn@~0.1.0:
   version "0.1.1"
   resolved "https://registry.npmjs.org/jsbn/-/jsbn-0.1.1.tgz#a5e654c2e5a2deb5f201d96cefbca80c0ef2f513"
@@ -12985,9 +12998,9 @@ xterm@^4.2.0:
   integrity sha512-oNfLqt+LmghLPOt5UcskP5Km1fXpTBHsTZ99nxJKY2N0MNFXBKIVXUcNNhHCa74JGZFMGhLT58A/UN3HcPXSfg==
 
 y18n@^3.2.1:
-  version "3.2.1"
-  resolved "https://registry.npmjs.org/y18n/-/y18n-3.2.1.tgz#6d15fba884c08679c0d77e88e7759e811e07fa41"
-  integrity sha1-bRX7qITAhnnA136I53WegR4H+kE=
+  version "3.2.2"
+  resolved "https://registry.yarnpkg.com/y18n/-/y18n-3.2.2.tgz#85c901bd6470ce71fc4bb723ad209b70f7f28696"
+  integrity sha512-uGZHXkHnhF0XeeAPgnKfPv1bgKAYyVvmNL1xlKsPYZPaIHxGti2hHqvOCQv71XMsLxu1QjergkqogUnms5D3YQ==
 
 "y18n@^3.2.1 || ^4.0.0", y18n@^4.0.0:
   version "4.0.0"