diff --git a/yarn.lock b/yarn.lock
index e7d754c..a8b8b85 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2736,7 +2736,7 @@ ember-export-application-global@^2.0.0:
   dependencies:
     ember-cli-babel "^6.0.0-beta.7"
 
-ember-fastboot-addon-tests@^0.5.1:
+ember-fastboot-addon-tests@^0.5.0:
   version "0.5.1"
   resolved "https://registry.yarnpkg.com/ember-fastboot-addon-tests/-/ember-fastboot-addon-tests-0.5.1.tgz#a0af9d9c80b97ddc3e03481c08cdc78931394642"
   integrity sha512-HpYYZ5HWp+i76wR3rJGJjDd2+YncKo5QkPiADTFkL0TdVU13yV8WowT1spxPQhtSa5N6HNQ9vcNb/ka1qIpVYQ==
@@ -5664,9 +5664,9 @@ morgan@^1.9.0:
     on-headers "~1.0.1"
 
 mout@^1.0.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/mout/-/mout-1.1.0.tgz#0b29d41e6a80fa9e2d4a5be9d602e1d9d02177f6"
-  integrity sha512-XsP0vf4As6BfqglxZqbqQ8SR6KQot2AgxvR0gG+WtUkf90vUXchMOZQtPf/Hml1rEffJupqL/tIrU6EYhsUQjw==
+  version "1.2.3"
+  resolved "https://registry.yarnpkg.com/mout/-/mout-1.2.3.tgz#bd1477d8c7f2db5fcf43c91de30b6cc746b78e10"
+  integrity sha512-vtE+eZcSj/sBkIp6gxB87MznryWP+gHIp0XX9SKrzA5TAkvz6y7VTuNruBjYdJozd8NY5i9XVIsn8cn3SwNjzg==
 
 ms@2.0.0:
   version "2.0.0"