diff --git a/app/src/entry.ts b/app/src/entry.ts
index 480bbe2b..6ee64af1 100644
--- a/app/src/entry.ts
+++ b/app/src/entry.ts
@@ -1,9 +1,8 @@
 import 'zone.js'
-import 'core-js/es7/reflect'
-import 'core-js/core/delay'
+import 'core-js/proposals/reflect-metadata'
 import 'rxjs'
 
-import isDev = require('electorn-is-dev')
+import isDev = require('electron-is-dev')
 
 import './global.scss'
 import './toastr.scss'
diff --git a/app/src/plugins.ts b/app/src/plugins.ts
index c3009d45..544df904 100644
--- a/app/src/plugins.ts
+++ b/app/src/plugins.ts
@@ -3,8 +3,6 @@ import * as path from 'path'
 const nodeModule = require('module')
 const nodeRequire = (global as any).require
 
-declare function delay (ms: number): Promise<void>
-
 function normalizePath (path: string): string {
     const cygwinPrefix = '/cygdrive/'
     if (path.startsWith(cygwinPrefix)) {
@@ -163,7 +161,6 @@ export async function loadPlugins (foundPlugins: IPluginInfo[], progress: Progre
         } catch (error) {
             console.error(`Could not load ${foundPlugin.name}:`, error)
         }
-        await delay(1)
         index++
     }
     progress(1, 1)
diff --git a/package.json b/package.json
index 945ffdd4..a828d434 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
     "app-builder-lib": "^20.41.0",
     "apply-loader": "0.1.0",
     "awesome-typescript-loader": "^5.0.0",
-    "core-js": "2.4.1",
+    "core-js": "^3.1.2",
     "cross-env": "5.2.0",
     "css-loader": "0.28.0",
     "electron": "^5.0.1",
diff --git a/terminus-plugin-manager/yarn.lock b/terminus-plugin-manager/yarn.lock
index bb5bb69f..a1231c4f 100644
--- a/terminus-plugin-manager/yarn.lock
+++ b/terminus-plugin-manager/yarn.lock
@@ -735,7 +735,7 @@ debug@^3.1.0:
   dependencies:
     ms "^2.1.1"
 
-debuglog@^1.0.1:
+debuglog@*, 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=
@@ -1294,7 +1294,7 @@ import-lazy@^2.1.0:
   resolved "https://registry.yarnpkg.com/import-lazy/-/import-lazy-2.1.0.tgz#05698e3d45c88e8d7e9d92cb0584e77f096f3e43"
   integrity sha1-BWmOPUXIjo1+nZLLBYTnfwlvPkM=
 
-imurmurhash@^0.1.4:
+imurmurhash@*, imurmurhash@^0.1.4:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/imurmurhash/-/imurmurhash-0.1.4.tgz#9218b9b2b928a238b13dc4fb6b6d576f231453ea"
   integrity sha1-khi5srkoojixPcT7a21XbyMUU+o=
@@ -1605,7 +1605,7 @@ libnpm@^2.0.1:
     read-package-json "^2.0.13"
     stringify-package "^1.0.0"
 
-libnpmaccess@^3.0.1:
+libnpmaccess@*, libnpmaccess@^3.0.1:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/libnpmaccess/-/libnpmaccess-3.0.1.tgz#5b3a9de621f293d425191aa2e779102f84167fa8"
   integrity sha512-RlZ7PNarCBt+XbnP7R6PoVgOq9t+kou5rvhaInoNibhPO7eMlRfS0B8yjatgn2yaHIwWNyoJDolC/6Lc5L/IQA==
@@ -1634,7 +1634,7 @@ libnpmhook@^5.0.2:
     get-stream "^4.0.0"
     npm-registry-fetch "^3.8.0"
 
-libnpmorg@^1.0.0:
+libnpmorg@*, libnpmorg@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/libnpmorg/-/libnpmorg-1.0.0.tgz#979b868c48ba28c5820e3bb9d9e73c883c16a232"
   integrity sha512-o+4eVJBoDGMgRwh2lJY0a8pRV2c/tQM/SxlqXezjcAg26Qe9jigYVs+Xk0vvlYDWCDhP0g74J8UwWeAgsB7gGw==
@@ -1659,7 +1659,7 @@ libnpmpublish@^1.1.0:
     semver "^5.5.1"
     ssri "^6.0.1"
 
-libnpmsearch@^2.0.0:
+libnpmsearch@*, libnpmsearch@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/libnpmsearch/-/libnpmsearch-2.0.0.tgz#de05af47ada81554a5f64276a69599070d4a5685"
   integrity sha512-vd+JWbTGzOSfiOc+72MU6y7WqmBXn49egCCrIXp27iE/88bX8EpG64ST1blWQI1bSMUr9l1AKPMVsqa2tS5KWA==
@@ -1668,7 +1668,7 @@ libnpmsearch@^2.0.0:
     get-stream "^4.0.0"
     npm-registry-fetch "^3.8.0"
 
-libnpmteam@^1.0.1:
+libnpmteam@*, libnpmteam@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/libnpmteam/-/libnpmteam-1.0.1.tgz#ff704b1b6c06ea674b3b1101ac3e305f5114f213"
   integrity sha512-gDdrflKFCX7TNwOMX1snWojCoDE5LoRWcfOC0C/fqF7mBq8Uz9zWAX4B2RllYETNO7pBupBaSyBDkTAC15cAMg==
@@ -1732,6 +1732,11 @@ 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"
@@ -1740,11 +1745,33 @@ 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"
@@ -1765,6 +1792,11 @@ lodash.memoize@^4.1.2:
   resolved "https://registry.yarnpkg.com/lodash.memoize/-/lodash.memoize-4.1.2.tgz#bcc6c49a42a2840ed997f323eada5ecd182e0bfe"
   integrity sha1-vMbEmkKihA7Zl/Mj6tpezRguC/4=
 
+lodash.restparam@*:
+  version "3.6.1"
+  resolved "https://registry.yarnpkg.com/lodash.restparam/-/lodash.restparam-3.6.1.tgz#936a4e309ef330a7645ed4145986c85ae5b20805"
+  integrity sha1-k2pOMJ7zMKdkXtQUWYbIWuWyCAU=
+
 lodash.union@~4.6.0:
   version "4.6.0"
   resolved "https://registry.yarnpkg.com/lodash.union/-/lodash.union-4.6.0.tgz#48bb5088409f16f1821666641c44dd1aaae3cd88"
@@ -2107,7 +2139,7 @@ npm-pick-manifest@^2.2.3:
     npm-package-arg "^6.0.0"
     semver "^5.4.1"
 
-npm-profile@^4.0.1:
+npm-profile@*, npm-profile@^4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/npm-profile/-/npm-profile-4.0.1.tgz#d350f7a5e6b60691c7168fbb8392c3603583f5aa"
   integrity sha512-NQ1I/1Q7YRtHZXkcuU1/IyHeLy6pd+ScKg4+DQHdfsm769TGq6HPrkbuNJVJS4zwE+0mvvmeULzQdWn2L2EsVA==
@@ -2140,7 +2172,7 @@ npm-user-validate@~1.0.0:
   resolved "https://registry.yarnpkg.com/npm-user-validate/-/npm-user-validate-1.0.0.tgz#8ceca0f5cea04d4e93519ef72d0557a75122e951"
   integrity sha1-jOyg9c6gTU6TUZ73LQVXp1Ei6VE=
 
-npm@^6.7.0:
+npm@~6.7.0:
   version "6.7.0"
   resolved "https://registry.yarnpkg.com/npm/-/npm-6.7.0.tgz#a563d6e6806913b2afa4c713ba63047cb7c63ea4"
   integrity sha512-OtxCLzx+pcsjMGrjZpBp214ZjxzHcAe3zLYIlaVpRYqFHff6bgggyTLf2OZPO8lfxN0RHLJnFFUU016JCzM/Ww==
@@ -2954,7 +2986,7 @@ readable-stream@~1.1.10:
     isarray "0.0.1"
     string_decoder "~0.10.x"
 
-readdir-scoped-modules@^1.0.0:
+readdir-scoped-modules@*, 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=
diff --git a/yarn.lock b/yarn.lock
index dea155a1..d8d093f5 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1428,10 +1428,15 @@ copy-descriptor@^0.1.0:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/copy-descriptor/-/copy-descriptor-0.1.1.tgz#676f6eb3c39997c2ee1ac3a924fd6124748f578d"
 
-core-js@2.4.1, core-js@^2.4.0:
+core-js@^2.4.0:
   version "2.4.1"
   resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.4.1.tgz#4de911e667b0eae9124e34254b53aea6fc618d3e"
 
+core-js@^3.1.2:
+  version "3.1.2"
+  resolved "https://registry.yarnpkg.com/core-js/-/core-js-3.1.2.tgz#2549a2cfb3ca1a5d851c9f7838e8b282cef2f3ba"
+  integrity sha512-3poRGjbu56leCtZCZCzCgQ7GcKOflDFnjWIepaPFUsM0IXUBrne10sl3aa2Bkcz3+FjRdIxBe9dAMhIJmEnQNA==
+
 core-util-is@1.0.2, core-util-is@~1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"