diff --git a/app/assets/javascripts/editor/ajax.js b/app/assets/javascripts/editor/ajax.js
index a6caa904..bcd79ffa 100644
--- a/app/assets/javascripts/editor/ajax.js
+++ b/app/assets/javascripts/editor/ajax.js
@@ -12,5 +12,6 @@ CodeOceanEditorAJAX = {
     $.flash.danger({
       text: message.length > 0 ? message : $('#flash').data('message-failure')
     });
+    Sentry.captureException(response);
   }
 };
\ No newline at end of file
diff --git a/app/assets/javascripts/editor/editor.js.erb b/app/assets/javascripts/editor/editor.js.erb
index b394beb0..3a41285b 100644
--- a/app/assets/javascripts/editor/editor.js.erb
+++ b/app/assets/javascripts/editor/editor.js.erb
@@ -565,6 +565,7 @@ configureEditors: function () {
         icon: ['fa', 'fa-bug'],
         text: $('#run').data('message-failure')
       });
+      Sentry.captureException(output);
     }
   },
 
@@ -606,7 +607,7 @@ configureEditors: function () {
     });
   },
 
-  showWebsocketError: function() {
+  showWebsocketError: function(error) {
     if (window.navigator.userAgent.indexOf('Edge') > -1 || window.navigator.userAgent.indexOf('Trident') > -1) {
       // Mute errors in Microsoft Edge and Internet Explorer
       return;
@@ -614,6 +615,7 @@ configureEditors: function () {
     $.flash.danger({
       text: $('#flash').data('message-failure')
     });
+    Sentry.captureException(error);
   },
 
   showFileDialog: function(event) {
diff --git a/app/assets/javascripts/exercises.js.erb b/app/assets/javascripts/exercises.js.erb
index 66c8dfb6..9b47729e 100644
--- a/app/assets/javascripts/exercises.js.erb
+++ b/app/assets/javascripts/exercises.js.erb
@@ -108,10 +108,11 @@ $(document).on('turbolinks:load', function() {
     }
   }
 
-  var ajaxError = function() {
+  var ajaxError = function(error) {
     $.flash.danger({
       text: $('#flash').data('message-failure')
     });
+    Sentry.captureException(error);
   };
 
   var buildCheckboxes = function() {
diff --git a/app/controllers/execution_environments_controller.rb b/app/controllers/execution_environments_controller.rb
index cf2160d8..66a212a8 100644
--- a/app/controllers/execution_environments_controller.rb
+++ b/app/controllers/execution_environments_controller.rb
@@ -121,6 +121,7 @@ class ExecutionEnvironmentsController < ApplicationController
   rescue DockerClient::Error => error
     @docker_images = []
     flash[:warning] = error.message
+    Raven.capture_exception(error)
   end
   private :set_docker_images
 
diff --git a/app/controllers/submissions_controller.rb b/app/controllers/submissions_controller.rb
index cdc9687e..60fcf6c2 100644
--- a/app/controllers/submissions_controller.rb
+++ b/app/controllers/submissions_controller.rb
@@ -190,9 +190,11 @@ class SubmissionsController < ApplicationController
               socket.send data
               Rails.logger.debug('Sent the received client data to docker:' + data)
             end
-          rescue JSON::ParserError
+          rescue JSON::ParserError => error
             socket.send data
             Rails.logger.debug('Rescued parsing error, sent the received client data to docker:' + data)
+            Raven.extra_context(data: data)
+            Raven.capture_exception(error)
           end
         end
 
@@ -395,7 +397,8 @@ class SubmissionsController < ApplicationController
     Rails.logger.debug('stopping submission ' + @submission.id.to_s)
     container = Docker::Container.get(params[:container_id])
     DockerClient.destroy_container(container)
-  rescue Docker::Error::NotFoundError
+  rescue Docker::Error::NotFoundError => error
+    Raven.capture_exception(error)
   ensure
     head :ok
   end
@@ -425,6 +428,7 @@ class SubmissionsController < ApplicationController
     yield(server_sent_event) if block_given?
     server_sent_event.write({code: 200}, event: 'close')
   rescue => exception
+    Raven.capture_exception(exception)
     logger.error(exception.message)
     logger.error(exception.backtrace.join("\n"))
     server_sent_event.write({code: 500}, event: 'close')
diff --git a/app/javascript/packs/application.js b/app/javascript/packs/application.js
index 5b69c104..139d205b 100644
--- a/app/javascript/packs/application.js
+++ b/app/javascript/packs/application.js
@@ -8,14 +8,16 @@
 // layout file, like app/views/layouts/application.html.slim
 
 // JS
-import 'jquery'
+import 'jquery';
 import 'bootstrap/dist/js/bootstrap.bundle.min';
 import 'chosen-js/chosen.jquery';
 import 'jstree';
 import 'underscore';
-import 'd3'
+import 'd3';
+import '@sentry/browser';
 window._ = _; // Publish underscore's `_` in global namespace
 window.d3 = d3; // Publish d3 in global namespace
+window.Sentry = Sentry; // Publish sentry in global namespace
 
 // CSS
 import 'chosen-js/chosen.css';
diff --git a/app/views/layouts/application.html.slim b/app/views/layouts/application.html.slim
index 2c8cb36c..2ba1967f 100644
--- a/app/views/layouts/application.html.slim
+++ b/app/views/layouts/application.html.slim
@@ -17,6 +17,21 @@ html lang='en'
     script type="text/javascript"
       | I18n.defaultLocale = "#{I18n.default_locale}";
       | I18n.locale = "#{I18n.locale}";
+      | Sentry.init({
+      |      dsn: 'https://637ca99538224b4bb28cd9e670e1b372@sentry.xikolo.de/33',
+      |      attachStacktrace: true,
+      |      release: "#{Raven.configuration.release}",
+      |      environment: "#{Raven.configuration.current_environment}",
+      |  });
+      - if @current_user
+        | Sentry.configureScope(function(scope) {
+        |   scope.setUser({
+        |      "id": "#{@current_user.id}",
+        |      "type": "#{@current_user.class.name}",
+        |      "username": "#{@current_user.displayname}",
+        |      "consumer": "#{@current_user.consumer.name}"
+        |    });
+        |  });
   body
     - unless @embed_options[:hide_navbar]
       nav.navbar.navbar-dark.bg-dark.navbar-expand-md.mb-4.py-1 role='navigation'
diff --git a/config/webpack/environment.js b/config/webpack/environment.js
index 706c8a1e..ea93de4b 100644
--- a/config/webpack/environment.js
+++ b/config/webpack/environment.js
@@ -19,6 +19,7 @@ environment.plugins.prepend('Provide', new webpack.ProvidePlugin({
         vis: 'vis',
         hljs: 'highlight.js',
         d3: 'd3',
+        Sentry: '@sentry/browser'
     })
 );
 
diff --git a/package.json b/package.json
index c25376f0..436b050a 100644
--- a/package.json
+++ b/package.json
@@ -2,6 +2,7 @@
   "dependencies": {
     "@fortawesome/fontawesome-free": "^5.12.1",
     "@rails/webpacker": "4.2",
+    "@sentry/browser": "^5.13.2",
     "bootstrap": "^4.1.3",
     "bootswatch": "^4.4.1",
     "chosen-js": "^1.8.7",
diff --git a/yarn.lock b/yarn.lock
index 7f084c87..cf715e6d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -801,6 +801,58 @@
     webpack-cli "^3.3.10"
     webpack-sources "^1.4.3"
 
+"@sentry/browser@^5.13.2":
+  version "5.13.2"
+  resolved "https://registry.yarnpkg.com/@sentry/browser/-/browser-5.13.2.tgz#fcca630c8c80447ba8392803d4e4450fd2231b92"
+  integrity sha512-4MeauHs8Rf1c2FF6n84wrvA4LexEL1K/Tg3r+1vigItiqyyyYBx1sPjHGZeKeilgBi+6IEV5O8sy30QIrA/NsQ==
+  dependencies:
+    "@sentry/core" "5.13.2"
+    "@sentry/types" "5.13.2"
+    "@sentry/utils" "5.13.2"
+    tslib "^1.9.3"
+
+"@sentry/core@5.13.2":
+  version "5.13.2"
+  resolved "https://registry.yarnpkg.com/@sentry/core/-/core-5.13.2.tgz#d89e199beef612d0a01e5c4df4e0bb7efcb72c74"
+  integrity sha512-iB7CQSt9e0EJhSmcNOCjzJ/u7E7qYJ3mI3h44GO83n7VOmxBXKSvtUl9FpKFypbWrsdrDz8HihLgAZZoMLWpPA==
+  dependencies:
+    "@sentry/hub" "5.13.2"
+    "@sentry/minimal" "5.13.2"
+    "@sentry/types" "5.13.2"
+    "@sentry/utils" "5.13.2"
+    tslib "^1.9.3"
+
+"@sentry/hub@5.13.2":
+  version "5.13.2"
+  resolved "https://registry.yarnpkg.com/@sentry/hub/-/hub-5.13.2.tgz#875a5ba983d6ada5caae5b6b4decd0257ef5cdb7"
+  integrity sha512-/U7yq3DTuRz8SRpZVKAaenW9sD2F5wbj12kDVPxPnGspyqhy0wBWKs9j0YJfBiDXMKOwp3HX964O3ygtwjnfAw==
+  dependencies:
+    "@sentry/types" "5.13.2"
+    "@sentry/utils" "5.13.2"
+    tslib "^1.9.3"
+
+"@sentry/minimal@5.13.2":
+  version "5.13.2"
+  resolved "https://registry.yarnpkg.com/@sentry/minimal/-/minimal-5.13.2.tgz#e42e33dc74fc935f8857d1a43a528afd741640fd"
+  integrity sha512-VV0eA3HgrnN3mac1XVPpSCLukYsU+QxegbmpnZ8UL8eIQSZ/ZikYxagDNlZbdnmXHUpOEUeag2gxVntSCo5UcA==
+  dependencies:
+    "@sentry/hub" "5.13.2"
+    "@sentry/types" "5.13.2"
+    tslib "^1.9.3"
+
+"@sentry/types@5.13.2":
+  version "5.13.2"
+  resolved "https://registry.yarnpkg.com/@sentry/types/-/types-5.13.2.tgz#8e68c31f8fb99b4074374bff13ed01035b373d8c"
+  integrity sha512-mgAEQyc77PYBnAjnslSXUz6aKgDlunlg2c2qSK/ivKlEkTgTWWW/dE76++qVdrqM8SupnqQoiXyPDL0wUNdB3g==
+
+"@sentry/utils@5.13.2":
+  version "5.13.2"
+  resolved "https://registry.yarnpkg.com/@sentry/utils/-/utils-5.13.2.tgz#441594f4f9412bfd1690739ce986bf3a49687806"
+  integrity sha512-LwPQl6WRMKEnd16kg35HS3yE+VhBc8vN4+BBIlrgs7X0aoT+AbEd/sQLMisDgxNboCF44Ho3RCKtztiPb9blqg==
+  dependencies:
+    "@sentry/types" "5.13.2"
+    tslib "^1.9.3"
+
 "@snyk/cli-interface@1.5.0":
   version "1.5.0"
   resolved "https://registry.yarnpkg.com/@snyk/cli-interface/-/cli-interface-1.5.0.tgz#b9dbe6ebfb86e67ffabf29d4e0d28a52670ac456"
@@ -2993,11 +3045,6 @@ detect-file@^1.0.0:
   resolved "https://registry.yarnpkg.com/detect-file/-/detect-file-1.0.0.tgz#f0d66d03672a825cb1b73bdb3fe62310c8e552b7"
   integrity sha1-8NZtA2cqglyxtzvbP+YjEMjlUrc=
 
-detect-libc@^1.0.2:
-  version "1.0.3"
-  resolved "https://registry.yarnpkg.com/detect-libc/-/detect-libc-1.0.3.tgz#fa137c4bd698edf55cd5cd02ac559f91a4c4ba9b"
-  integrity sha1-+hN8S9aY7fVc1c0CrFWfkaTEups=
-
 detect-node@^2.0.4:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/detect-node/-/detect-node-2.0.4.tgz#014ee8f8f669c5c58023da64b8179c083a28c46c"
@@ -3682,13 +3729,6 @@ fs-constants@^1.0.0:
   resolved "https://registry.yarnpkg.com/fs-constants/-/fs-constants-1.0.0.tgz#6be0de9be998ce16af8afc24497b9ee9b7ccd9ad"
   integrity sha512-y6OAwoSIf7FyjMIv94u+b5rdheZEjzR63GTyZJm5qh4Bi+2YgwLCcI/fPFZkL5PSixOt6ZNKm+w+Hfp/Bciwow==
 
-fs-minipass@^1.2.5:
-  version "1.2.7"
-  resolved "https://registry.yarnpkg.com/fs-minipass/-/fs-minipass-1.2.7.tgz#ccff8570841e7fe4265693da88936c55aed7f7c7"
-  integrity sha512-GWSSJGFy4e9GUeCcbIkED+bgAoFyj7XF1mV8rma3QW4NIqX9Kyx79N/PF61H5udOV3aY1IaMLs6pGbH71nlCTA==
-  dependencies:
-    minipass "^2.6.0"
-
 fs-minipass@^2.0.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/fs-minipass/-/fs-minipass-2.1.0.tgz#7f5036fdbf12c63c169190cbe4199c852271f9fb"
@@ -4231,13 +4271,6 @@ iferr@^0.1.5:
   resolved "https://registry.yarnpkg.com/iferr/-/iferr-0.1.5.tgz#c60eed69e6d8fdb6b3104a1fcbca1c192dc5b501"
   integrity sha1-xg7taebY/bazEEofy8ocGS3FtQE=
 
-ignore-walk@^3.0.1:
-  version "3.0.3"
-  resolved "https://registry.yarnpkg.com/ignore-walk/-/ignore-walk-3.0.3.tgz#017e2447184bfeade7c238e4aefdd1e8f95b1e37"
-  integrity sha512-m7o6xuOaT1aqheYHKf8W6J5pYH85ZI9w077erOzLje3JsB1gkafkAhHHY19dqjulgIZHFm32Cp5uNZgcQqdJKw==
-  dependencies:
-    minimatch "^3.0.4"
-
 immediate@~3.0.5:
   version "3.0.6"
   resolved "https://registry.yarnpkg.com/immediate/-/immediate-3.0.6.tgz#9db1dbd0faf8de6fbe0f5dd5e56bb606280de69b"
@@ -5367,14 +5400,6 @@ minipass-pipeline@^1.2.2:
   dependencies:
     minipass "^3.0.0"
 
-minipass@^2.6.0, minipass@^2.8.6, minipass@^2.9.0:
-  version "2.9.0"
-  resolved "https://registry.yarnpkg.com/minipass/-/minipass-2.9.0.tgz#e713762e7d3e32fed803115cf93e04bca9fcc9a6"
-  integrity sha512-wxfUjg9WebH+CUDX/CdbRlh5SmfZiy/hpkxaRI16Y9W56Pa75sWgd/rvFilSgrauD9NyFymP/+JFV3KwzIsJeg==
-  dependencies:
-    safe-buffer "^5.1.2"
-    yallist "^3.0.0"
-
 minipass@^3.0.0, minipass@^3.1.1:
   version "3.1.1"
   resolved "https://registry.yarnpkg.com/minipass/-/minipass-3.1.1.tgz#7607ce778472a185ad6d89082aa2070f79cedcd5"
@@ -5382,13 +5407,6 @@ minipass@^3.0.0, minipass@^3.1.1:
   dependencies:
     yallist "^4.0.0"
 
-minizlib@^1.2.1:
-  version "1.3.3"
-  resolved "https://registry.yarnpkg.com/minizlib/-/minizlib-1.3.3.tgz#2290de96818a34c29551c8a8d301216bd65a861d"
-  integrity sha512-6ZYMOEnmVsdCeTJVE0W9ZD+pVnE8h9Hma/iOwwRDsdQoePpoX56/8B6z3P9VNwppJuBKNRuFDRNRqRWexT9G9Q==
-  dependencies:
-    minipass "^2.9.0"
-
 mississippi@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/mississippi/-/mississippi-3.0.0.tgz#ea0a3291f97e0b5e8776b363d5f0a12d94c67022"
@@ -5502,7 +5520,7 @@ nconf@^0.10.0:
     secure-keys "^1.0.0"
     yargs "^3.19.0"
 
-needle@^2.2.1, needle@^2.2.4:
+needle@^2.2.4:
   version "2.3.3"
   resolved "https://registry.yarnpkg.com/needle/-/needle-2.3.3.tgz#a041ad1d04a871b0ebb666f40baaf1fb47867117"
   integrity sha512-EkY0GeSq87rWp1hoq/sH/wnTWgFVhYlnIkbJ0YJFfRgEFlz2RraCjBpFQ+vrEgEdp0ThfyHADmkChEhcb7PKyw==
@@ -5592,22 +5610,6 @@ node-libs-browser@^2.2.1:
     util "^0.11.0"
     vm-browserify "^1.0.1"
 
-node-pre-gyp@*:
-  version "0.14.0"
-  resolved "https://registry.yarnpkg.com/node-pre-gyp/-/node-pre-gyp-0.14.0.tgz#9a0596533b877289bcad4e143982ca3d904ddc83"
-  integrity sha512-+CvDC7ZttU/sSt9rFjix/P05iS43qHCOOGzcr3Ry99bXG7VX953+vFyEuph/tfqoYu8dttBkE86JSKBO2OzcxA==
-  dependencies:
-    detect-libc "^1.0.2"
-    mkdirp "^0.5.1"
-    needle "^2.2.1"
-    nopt "^4.0.1"
-    npm-packlist "^1.1.6"
-    npmlog "^4.0.2"
-    rc "^1.2.7"
-    rimraf "^2.6.1"
-    semver "^5.3.0"
-    tar "^4.4.2"
-
 node-releases@^1.1.50:
   version "1.1.50"
   resolved "https://registry.yarnpkg.com/node-releases/-/node-releases-1.1.50.tgz#803c40d2c45db172d0410e4efec83aa8c6ad0592"
@@ -5645,14 +5647,6 @@ node-sass@^4.13.0:
   dependencies:
     abbrev "1"
 
-nopt@^4.0.1:
-  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/nopt/-/nopt-4.0.1.tgz#d0d4685afd5415193c8c7505602d0d17cd64474d"
-  integrity sha1-0NRoWv1UFRk8jHUFYC0NF81kR00=
-  dependencies:
-    abbrev "1"
-    osenv "^0.1.4"
-
 normalize-package-data@^2.3.2, normalize-package-data@^2.3.4:
   version "2.5.0"
   resolved "https://registry.yarnpkg.com/normalize-package-data/-/normalize-package-data-2.5.0.tgz#e66db1838b200c1dfc233225d12cb36520e234a8"
@@ -5695,27 +5689,6 @@ normalize-url@^3.0.0, normalize-url@^3.3.0:
   resolved "https://registry.yarnpkg.com/normalize-url/-/normalize-url-3.3.0.tgz#b2e1c4dc4f7c6d57743df733a4f5978d18650559"
   integrity sha512-U+JJi7duF1o+u2pynbp2zXDW2/PADgC30f0GsHZtRh+HOcXHnw137TrNlyxxRvWW5fjKd3bcLHPxofWuCjaeZg==
 
-npm-bundled@^1.0.1:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/npm-bundled/-/npm-bundled-1.1.1.tgz#1edd570865a94cdb1bc8220775e29466c9fb234b"
-  integrity sha512-gqkfgGePhTpAEgUsGEgcq1rqPXA+tv/aVBlgEzfXwA1yiUJF7xtEt3CtVwOjNYQOVknDk0F20w58Fnm3EtG0fA==
-  dependencies:
-    npm-normalize-package-bin "^1.0.1"
-
-npm-normalize-package-bin@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/npm-normalize-package-bin/-/npm-normalize-package-bin-1.0.1.tgz#6e79a41f23fd235c0623218228da7d9c23b8f6e2"
-  integrity sha512-EPfafl6JL5/rU+ot6P3gRSCpPDW5VmIzX959Ob1+ySFUuuYHWHekXpwdUZcKP5C+DS4GEtdJluwBjnsNDl+fSA==
-
-npm-packlist@^1.1.6:
-  version "1.4.8"
-  resolved "https://registry.yarnpkg.com/npm-packlist/-/npm-packlist-1.4.8.tgz#56ee6cc135b9f98ad3d51c1c95da22bbb9b2ef3e"
-  integrity sha512-5+AZgwru5IevF5ZdnFglB5wNlHG1AOOuw28WhUq8/8emhBmLv6jX5by4WJCh7lW0uSYZYS6DXqIsyZVIXRZU9A==
-  dependencies:
-    ignore-walk "^3.0.1"
-    npm-bundled "^1.0.1"
-    npm-normalize-package-bin "^1.0.1"
-
 npm-run-path@^2.0.0:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/npm-run-path/-/npm-run-path-2.0.2.tgz#35a9232dfa35d7067b4cb2ddf2357b1871536c5f"
@@ -5723,7 +5696,7 @@ npm-run-path@^2.0.0:
   dependencies:
     path-key "^2.0.0"
 
-"npmlog@0 || 1 || 2 || 3 || 4", npmlog@^4.0.0, npmlog@^4.0.2:
+"npmlog@0 || 1 || 2 || 3 || 4", npmlog@^4.0.0:
   version "4.1.2"
   resolved "https://registry.yarnpkg.com/npmlog/-/npmlog-4.1.2.tgz#08a7f2a8bf734604779a9efa4ad5cc717abb954b"
   integrity sha512-2uUqazuKlTaSI/dC8AzicUck7+IrEaOnN/e0jd3Xtt1KcGpwx30v50mL7oPyr/h9bL3E4aZccVwpwP+5W9Vjkg==
@@ -5940,7 +5913,7 @@ os-tmpdir@^1.0.0, os-tmpdir@~1.0.2:
   resolved "https://registry.yarnpkg.com/os-tmpdir/-/os-tmpdir-1.0.2.tgz#bbe67406c79aa85c5cfec766fe5734555dfa1274"
   integrity sha1-u+Z0BseaqFxc/sdm/lc0VV36EnQ=
 
-osenv@0, osenv@^0.1.4:
+osenv@0:
   version "0.1.5"
   resolved "https://registry.yarnpkg.com/osenv/-/osenv-0.1.5.tgz#85cdfafaeb28e8677f416e287592b5f3f49ea410"
   integrity sha512-0CWcCECdMVc2Rw3U5w9ZjqX6ga6ubk1xDVKxtBQPK7wis/0F2r9T6k4ydGYhecl7YUBxBVxhL5oisPsNxAPe2g==
@@ -7153,7 +7126,7 @@ raw-body@^2.2.0:
     iconv-lite "0.4.24"
     unpipe "1.0.0"
 
-rc@^1.0.1, rc@^1.1.6, rc@^1.2.7:
+rc@^1.0.1, rc@^1.1.6:
   version "1.2.8"
   resolved "https://registry.yarnpkg.com/rc/-/rc-1.2.8.tgz#cd924bf5200a075b83c188cd6b9e211b7fc0d3ed"
   integrity sha512-y3bGgqKj3QBdxLbLkomlohkvsA8gdAiUQlSBJnBhfn+BPxg4bc62d8TcBW15wavDfgexCgccckhcZvywyQYPOw==
@@ -7448,7 +7421,7 @@ rgba-regex@^1.0.0:
   resolved "https://registry.yarnpkg.com/rgba-regex/-/rgba-regex-1.0.0.tgz#43374e2e2ca0968b0ef1523460b7d730ff22eeb3"
   integrity sha1-QzdOLiyglosO8VI0YLfXMP8i7rM=
 
-rimraf@2, rimraf@^2.5.4, rimraf@^2.6.1, rimraf@^2.6.3, rimraf@^2.7.1:
+rimraf@2, rimraf@^2.5.4, rimraf@^2.6.3, rimraf@^2.7.1:
   version "2.7.1"
   resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-2.7.1.tgz#35797f13a7fdadc566142c29d4f07ccad483e3ec"
   integrity sha512-uWjbaKIK3T1OSVptzX7Nl6PvQ3qAGtKEtVRjRuazjfL3Bx5eI409VZSqgND+4UNnmzLVdPj9FqFJNPqBZFve4w==
@@ -7586,7 +7559,7 @@ semver-diff@^2.0.0:
   dependencies:
     semver "^5.0.3"
 
-"semver@2 || 3 || 4 || 5", semver@^5.0.3, semver@^5.1.0, semver@^5.3.0, semver@^5.4.1, semver@^5.5.0, semver@^5.5.1, semver@^5.6.0:
+"semver@2 || 3 || 4 || 5", semver@^5.0.3, semver@^5.1.0, semver@^5.4.1, semver@^5.5.0, semver@^5.5.1, semver@^5.6.0:
   version "5.7.1"
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.7.1.tgz#a954f931aeba508d307bbf069eff0c01c96116f7"
   integrity sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ==
@@ -8445,19 +8418,6 @@ tar@^2.0.0:
     fstream "^1.0.12"
     inherits "2"
 
-tar@^4.4.2:
-  version "4.4.13"
-  resolved "https://registry.yarnpkg.com/tar/-/tar-4.4.13.tgz#43b364bc52888d555298637b10d60790254ab525"
-  integrity sha512-w2VwSrBoHa5BsSyH+KxEqeQBAllHhccyMFVHtGtdMpF4W7IRWfZjFiQceJPChOeTsSDVUpER2T8FA93pr0L+QA==
-  dependencies:
-    chownr "^1.1.1"
-    fs-minipass "^1.2.5"
-    minipass "^2.8.6"
-    minizlib "^1.2.1"
-    mkdirp "^0.5.0"
-    safe-buffer "^5.1.2"
-    yallist "^3.0.3"
-
 temp-dir@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/temp-dir/-/temp-dir-1.0.0.tgz#0a7c0ea26d3a39afa7e0ebea9c1fc0bc4daa011d"
@@ -9240,7 +9200,7 @@ yallist@^2.1.2:
   resolved "https://registry.yarnpkg.com/yallist/-/yallist-2.1.2.tgz#1c11f9218f076089a47dd512f93c6699a6a81d52"
   integrity sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=
 
-yallist@^3.0.0, yallist@^3.0.2, yallist@^3.0.3:
+yallist@^3.0.2:
   version "3.1.1"
   resolved "https://registry.yarnpkg.com/yallist/-/yallist-3.1.1.tgz#dbb7daf9bfd8bac9ab45ebf602b8cbad0d5d08fd"
   integrity sha512-a4UGQaWPH59mOXUYnAG2ewncQS4i4F43Tv3JoAM+s2VDAmS9NsK8GpDMLrCHPksFT7h3K6TOoUNn2pb7RoXx4g==