diff --git a/package.json b/package.json
index 2b6733b..3211bb8 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
     "@semantic-release/changelog": "3.0.2",
     "@semantic-release/github": "5.2.10",
     "@types/graphql": "14.0.5",
-    "@types/ws": "6.0.1",
+    "@types/ws": "6.0.4",
     "semantic-release": "15.13.3",
     "ts-node": "8.0.2",
     "typescript": "3.3.3"
diff --git a/yarn.lock b/yarn.lock
index 8bedd46..a68203a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -200,12 +200,11 @@
   resolved "https://registry.yarnpkg.com/@types/tough-cookie/-/tough-cookie-2.3.5.tgz#9da44ed75571999b65c37b60c9b2b88db54c585d"
   integrity sha512-SCcK7mvGi3+ZNz833RRjFIxrn4gI1PPR3NtuIS+6vMkvmsGjosqTJwRt5bAEFLRz+wtJMWv8+uOnZf2hi2QXTg==
 
-"@types/ws@6.0.1":
-  version "6.0.1"
-  resolved "https://registry.yarnpkg.com/@types/ws/-/ws-6.0.1.tgz#ca7a3f3756aa12f62a0a62145ed14c6db25d5a28"
-  integrity sha512-EzH8k1gyZ4xih/MaZTXwT2xOkPiIMSrhQ9b8wrlX88L0T02eYsddatQlwVFlEPyEqV0ChpdpNnE51QPH6NVT4Q==
+"@types/ws@6.0.4":
+  version "6.0.4"
+  resolved "https://registry.yarnpkg.com/@types/ws/-/ws-6.0.4.tgz#7797707c8acce8f76d8c34b370d4645b70421ff1"
+  integrity sha512-PpPrX7SZW9re6+Ha8ojZG4Se8AZXgf0GK6zmfqEuCsY49LFDNXO3SByp44X3dFEqtB73lkCDAdUazhAjVPiNwg==
   dependencies:
-    "@types/events" "*"
     "@types/node" "*"
 
 JSONStream@^1.0.4, JSONStream@^1.3.4:
@@ -1090,7 +1089,7 @@ debug@^4.0.0, debug@^4.1.0:
   dependencies:
     ms "^2.1.1"
 
-debuglog@*, debuglog@^1.0.1:
+debuglog@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/debuglog/-/debuglog-1.0.1.tgz#aa24ffb9ac3df9a2351837cfb2d279360cd78492"
   integrity sha1-qiT/uaw9+aI1GDfPstJ5NgzXhJI=
@@ -1921,7 +1920,7 @@ import-lazy@^2.1.0:
   resolved "https://registry.yarnpkg.com/import-lazy/-/import-lazy-2.1.0.tgz#05698e3d45c88e8d7e9d92cb0584e77f096f3e43"
   integrity sha1-BWmOPUXIjo1+nZLLBYTnfwlvPkM=
 
-imurmurhash@*, imurmurhash@^0.1.4:
+imurmurhash@^0.1.4:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/imurmurhash/-/imurmurhash-0.1.4.tgz#9218b9b2b928a238b13dc4fb6b6d576f231453ea"
   integrity sha1-khi5srkoojixPcT7a21XbyMUU+o=
@@ -2483,11 +2482,6 @@ lockfile@^1.0.4:
   dependencies:
     signal-exit "^3.0.2"
 
-lodash._baseindexof@*:
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/lodash._baseindexof/-/lodash._baseindexof-3.1.0.tgz#fe52b53a1c6761e42618d654e4a25789ed61822c"
-  integrity sha1-/lK1OhxnYeQmGNZU5KJXie1hgiw=
-
 lodash._baseuniq@~4.6.0:
   version "4.6.0"
   resolved "https://registry.yarnpkg.com/lodash._baseuniq/-/lodash._baseuniq-4.6.0.tgz#0ebb44e456814af7905c6212fa2c9b2d51b841e8"
@@ -2496,33 +2490,11 @@ lodash._baseuniq@~4.6.0:
     lodash._createset "~4.0.0"
     lodash._root "~3.0.0"
 
-lodash._bindcallback@*:
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/lodash._bindcallback/-/lodash._bindcallback-3.0.1.tgz#e531c27644cf8b57a99e17ed95b35c748789392e"
-  integrity sha1-5THCdkTPi1epnhftlbNcdIeJOS4=
-
-lodash._cacheindexof@*:
-  version "3.0.2"
-  resolved "https://registry.yarnpkg.com/lodash._cacheindexof/-/lodash._cacheindexof-3.0.2.tgz#3dc69ac82498d2ee5e3ce56091bafd2adc7bde92"
-  integrity sha1-PcaayCSY0u5ePOVgkbr9Ktx73pI=
-
-lodash._createcache@*:
-  version "3.1.2"
-  resolved "https://registry.yarnpkg.com/lodash._createcache/-/lodash._createcache-3.1.2.tgz#56d6a064017625e79ebca6b8018e17440bdcf093"
-  integrity sha1-VtagZAF2JeeevKa4AY4XRAvc8JM=
-  dependencies:
-    lodash._getnative "^3.0.0"
-
 lodash._createset@~4.0.0:
   version "4.0.3"
   resolved "https://registry.yarnpkg.com/lodash._createset/-/lodash._createset-4.0.3.tgz#0f4659fbb09d75194fa9e2b88a6644d363c9fe26"
   integrity sha1-D0ZZ+7CddRlPqeK4imZE02PJ/iY=
 
-lodash._getnative@*, lodash._getnative@^3.0.0:
-  version "3.9.1"
-  resolved "https://registry.yarnpkg.com/lodash._getnative/-/lodash._getnative-3.9.1.tgz#570bc7dede46d61cdcde687d65d3eecbaa3aaff5"
-  integrity sha1-VwvH3t5G1hzc3mh9ZdPuy6o6r/U=
-
 lodash._root@~3.0.0:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/lodash._root/-/lodash._root-3.0.1.tgz#fba1c4524c19ee9a5f8136b4609f017cf4ded692"
@@ -2588,11 +2560,6 @@ lodash.once@^4.0.0:
   resolved "https://registry.yarnpkg.com/lodash.once/-/lodash.once-4.1.1.tgz#0dd3971213c7c56df880977d504c88fb471a97ac"
   integrity sha1-DdOXEhPHxW34gJd9UEyI+0cal6w=
 
-lodash.restparam@*:
-  version "3.6.1"
-  resolved "https://registry.yarnpkg.com/lodash.restparam/-/lodash.restparam-3.6.1.tgz#936a4e309ef330a7645ed4145986c85ae5b20805"
-  integrity sha1-k2pOMJ7zMKdkXtQUWYbIWuWyCAU=
-
 lodash.set@^4.3.2:
   version "4.3.2"
   resolved "https://registry.yarnpkg.com/lodash.set/-/lodash.set-4.3.2.tgz#d8757b1da807dde24816b0d6a84bea1a76230b23"
@@ -3971,7 +3938,7 @@ readable-stream@~1.1.10:
     isarray "0.0.1"
     string_decoder "~0.10.x"
 
-readdir-scoped-modules@*, readdir-scoped-modules@^1.0.0:
+readdir-scoped-modules@^1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/readdir-scoped-modules/-/readdir-scoped-modules-1.0.2.tgz#9fafa37d286be5d92cbaebdee030dc9b5f406747"
   integrity sha1-n6+jfShr5dksuuve4DDcm19AZ0c=