diff --git a/yarn.lock b/yarn.lock
index 2c67732..705682f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -218,10 +218,6 @@
   version "7.0.39"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-7.0.39.tgz#8aced4196387038113f6f9aa4014ab4c51edab3c"
 
-"@types/pubsub-js@^1.5.18":
-  version "1.5.18"
-  resolved "https://registry.npmjs.org/@types/pubsub-js/-/pubsub-js-1.5.18.tgz#dd12284c5e93b39874e62675702bf50c6f55e9ec"
-
 "@types/reflect-metadata@^0.0.5":
   version "0.0.5"
   resolved "https://registry.npmjs.org/@types/reflect-metadata/-/reflect-metadata-0.0.5.tgz#9c042bfa9803d577aad4f57dfbca4b7cae4286fe"
@@ -4704,10 +4700,6 @@ pseudomap@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/pseudomap/-/pseudomap-1.0.2.tgz#f052a28da70e618917ef0a8ac34c1ae5a68286b3"
 
-pubsub-js@^1.6.0:
-  version "1.6.0"
-  resolved "https://registry.npmjs.org/pubsub-js/-/pubsub-js-1.6.0.tgz#232d36485ce7905a54629ec5783d9f6f4c638026"
-
 punycode@^1.4.1:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-1.4.1.tgz#c0d5a63b2718800ad8e1eb0fa5269c84dd41845e"
@@ -4735,8 +4727,8 @@ q@^1.1.2:
   resolved "https://registry.npmjs.org/q/-/q-1.5.1.tgz#7e32f75b41381291d04611f1bf14109ac00651d7"
 
 qs@~6.4.0:
-  version "6.4.0"
-  resolved "https://registry.yarnpkg.com/qs/-/qs-6.4.0.tgz#13e26d28ad6b0ffaa91312cd3bf708ed351e7233"
+  version "6.4.1"
+  resolved "https://registry.yarnpkg.com/qs/-/qs-6.4.1.tgz#2bad97710a5b661c366b378b1e3a44a592ff45e6"
 
 qs@~6.5.1:
   version "6.5.1"