diff --git a/yarn.lock b/yarn.lock
index 535934a96..6bfd132f8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4571,10 +4571,6 @@ postcss@^5.0.10, postcss@^5.0.11, postcss@^5.0.12, postcss@^5.0.13, postcss@^5.0
     source-map "^0.5.6"
     supports-color "^3.1.2"
 
-postinstall-build@^2.0.0:
-  version "2.1.3"
-  resolved "https://registry.yarnpkg.com/postinstall-build/-/postinstall-build-2.1.3.tgz#9d1886ab2949619f4c206afbe1aea95debe45c94"
-
 pre-commit@^1.1.3:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/pre-commit/-/pre-commit-1.1.3.tgz#6d5ed90740472072958c711a15f676aa2c231377"
@@ -5862,8 +5858,8 @@ xtend@^4.0.0:
   resolved "https://registry.yarnpkg.com/xtend/-/xtend-4.0.1.tgz#a5c6d532be656e23db820efb943a1f04998d63af"
 
 y18n@^3.2.1:
-  version "3.2.1"
-  resolved "https://registry.yarnpkg.com/y18n/-/y18n-3.2.1.tgz#6d15fba884c08679c0d77e88e7759e811e07fa41"
+  version "3.2.2"
+  resolved "https://registry.yarnpkg.com/y18n/-/y18n-3.2.2.tgz#85c901bd6470ce71fc4bb723ad209b70f7f28696"
 
 yallist@^2.0.0:
   version "2.0.0"