diff --git a/sample-react-redux-tutorial/yarn.lock b/sample-react-redux-tutorial/yarn.lock
index 81ae136..1b69882 100644
--- a/sample-react-redux-tutorial/yarn.lock
+++ b/sample-react-redux-tutorial/yarn.lock
@@ -1255,13 +1255,15 @@ browserify-zlib@^0.2.0:
     pako "~1.0.5"
 
 browserslist@^4.6.0, browserslist@^4.6.6:
-  version "4.7.0"
-  resolved "https://artifactory.wikia-inc.com:443/artifactory/api/npm/wikia-npm/browserslist/-/browserslist-4.7.0.tgz#9ee89225ffc07db03409f2fee524dc8227458a17"
-  integrity sha1-nuiSJf/AfbA0CfL+5STcgidFihc=
+  version "4.16.6"
+  resolved "https://registry.yarnpkg.com/browserslist/-/browserslist-4.16.6.tgz#d7901277a5a88e554ed305b183ec9b0c08f66fa2"
+  integrity sha512-Wspk/PqO+4W9qp5iUTJsa1B/QrYn1keNCcEP5OvP7WBwT4KaDly0uONYmC6Xa3Z5IqnUgS0KcgLYu1l74x0ZXQ==
   dependencies:
-    caniuse-lite "^1.0.30000989"
-    electron-to-chromium "^1.3.247"
-    node-releases "^1.1.29"
+    caniuse-lite "^1.0.30001219"
+    colorette "^1.2.2"
+    electron-to-chromium "^1.3.723"
+    escalade "^3.1.1"
+    node-releases "^1.1.71"
 
 buffer-from@^1.0.0:
   version "1.1.1"
@@ -1351,10 +1353,10 @@ camelcase@^5.0.0:
   resolved "https://artifactory.wikia-inc.com:443/artifactory/api/npm/wikia-npm/camelcase/-/camelcase-5.3.1.tgz#e3c9b31569e106811df242f715725a1f4c494320"
   integrity sha1-48mzFWnhBoEd8kL3FXJaH0xJQyA=
 
-caniuse-lite@^1.0.30000989:
-  version "1.0.30000989"
-  resolved "https://artifactory.wikia-inc.com:443/artifactory/api/npm/wikia-npm/caniuse-lite/-/caniuse-lite-1.0.30000989.tgz#b9193e293ccf7e4426c5245134b8f2a56c0ac4b9"
-  integrity sha1-uRk+KTzPfkQmxSRRNLjypWwKxLk=
+caniuse-lite@^1.0.30001219:
+  version "1.0.30001228"
+  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30001228.tgz#bfdc5942cd3326fa51ee0b42fbef4da9d492a7fa"
+  integrity sha512-QQmLOGJ3DEgokHbMSA8cj2a+geXqmnpyOFT0lhQV6P3/YOJvGDEwoedcwxEQ30gJIwIIunHIicunJ2rzK5gB2A==
 
 chalk@2.4.2, chalk@^2.0.0:
   version "2.4.2"
@@ -1464,6 +1466,11 @@ color-name@1.1.3:
   resolved "https://artifactory.wikia-inc.com:443/artifactory/api/npm/wikia-npm/color-name/-/color-name-1.1.3.tgz#a7d0558bd89c42f795dd42328f740831ca53bc25"
   integrity sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=
 
+colorette@^1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/colorette/-/colorette-1.2.2.tgz#cbcc79d5e99caea2dbf10eb3a26fd8b3e6acfa94"
+  integrity sha512-MKGMzyfeuutC/ZJ1cba9NqcNpfeqMUcYmyF1ZFY6/Cn7CNSAKx6a+s48sqLqyAiZuaP2TcqMhoo+dlwFnVxT9w==
+
 commander@2.17.x:
   version "2.17.1"
   resolved "https://artifactory.wikia-inc.com:443/artifactory/api/npm/wikia-npm/commander/-/commander-2.17.1.tgz#bd77ab7de6de94205ceacc72f1716d29f20a77bf"
@@ -1922,10 +1929,10 @@ ee-first@1.1.1:
   resolved "https://artifactory.wikia-inc.com:443/artifactory/api/npm/wikia-npm/ee-first/-/ee-first-1.1.1.tgz#590c61156b0ae2f4f0255732a158b266bc56b21d"
   integrity sha1-WQxhFWsK4vTwJVcyoViyZrxWsh0=
 
-electron-to-chromium@^1.3.247:
-  version "1.3.253"
-  resolved "https://artifactory.wikia-inc.com:443/artifactory/api/npm/wikia-npm/electron-to-chromium/-/electron-to-chromium-1.3.253.tgz#bc3b2c94c2a109c08d37b04f526dc05fdabcbb5b"
-  integrity sha1-vDsslMKhCcCNN7BPUm3AX9q8u1s=
+electron-to-chromium@^1.3.723:
+  version "1.3.738"
+  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.738.tgz#aec24b091c82acbfabbdcce08076a703941d17ca"
+  integrity sha512-vCMf4gDOpEylPSLPLSwAEsz+R3ShP02Y3cAKMZvTqule3XcPp7tgc/0ESI7IS6ZeyBlGClE50N53fIOkcIVnpw==
 
 elliptic@^6.0.0:
   version "6.5.1"
@@ -2021,6 +2028,11 @@ es6-templates@^0.2.3:
     recast "~0.11.12"
     through "~2.3.6"
 
+escalade@^3.1.1:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/escalade/-/escalade-3.1.1.tgz#d8cfdc7000965c5a0174b4a82eaa5c0552742e40"
+  integrity sha512-k0er2gUkLf8O0zKJiAhmkTnJlTvINGv7ygDNPbeIsX/TJjGJZHuh9B2UxbsaEkmlEo9MfhrSzmhIlhRlI2GXnw==
+
 escape-html@~1.0.3:
   version "1.0.3"
   resolved "https://artifactory.wikia-inc.com:443/artifactory/api/npm/wikia-npm/escape-html/-/escape-html-1.0.3.tgz#0258eae4d3d0c0974de1c169188ef0051d1d1988"
@@ -3521,12 +3533,10 @@ node-pre-gyp@^0.12.0:
     semver "^5.3.0"
     tar "^4"
 
-node-releases@^1.1.29:
-  version "1.1.30"
-  resolved "https://artifactory.wikia-inc.com:443/artifactory/api/npm/wikia-npm/node-releases/-/node-releases-1.1.30.tgz#35eebf129c63baeb6d8ddeda3c35b05abfd37f7f"
-  integrity sha1-Ne6/Epxjuuttjd7aPDWwWr/Tf38=
-  dependencies:
-    semver "^5.3.0"
+node-releases@^1.1.71:
+  version "1.1.72"
+  resolved "https://registry.yarnpkg.com/node-releases/-/node-releases-1.1.72.tgz#14802ab6b1039a79a0c7d662b610a5bbd76eacbe"
+  integrity sha512-LLUo+PpH3dU6XizX3iVoubUNheF/owjXCZZ5yACDxNnPtgFuludV1ZL3ayK1kVep42Rmm0+R9/Y60NQbZ2bifw==
 
 nopt@^4.0.1:
   version "4.0.1"