diff --git a/yarn.lock b/yarn.lock
index 93ed987..e536471 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -466,7 +466,7 @@ cssesc@^2.0.0:
   resolved "https://registry.yarnpkg.com/cssesc/-/cssesc-2.0.0.tgz#3b13bd1bb1cb36e1bcb5a4dcd27f54c5dcb35703"
   integrity sha512-MsCAG1z9lPdoO/IUMLSBWBSVxVtJ1395VGIQ+Fc2gNdkQ1hNDnQdw3YhA71WJCBW1vdwA0cAnk/DnW6bqoEUYg==
 
-cssnano-preset-advanced@^4.0.7:
+cssnano-preset-advanced@4.0.7:
   version "4.0.7"
   resolved "https://registry.yarnpkg.com/cssnano-preset-advanced/-/cssnano-preset-advanced-4.0.7.tgz#d981527b77712e2f3f3f09c73313e9b71b278b88"
   integrity sha512-j1O5/DQnaAqEyFFQfC+Z/vRlLXL3LxJHN+lvsfYqr7KgPH74t69+Rsy2yXkovWNaJjZYBpdz2Fj8ab2nH7pZXw==
@@ -536,7 +536,7 @@ cssnano-util-same-parent@^4.0.0:
   resolved "https://registry.yarnpkg.com/cssnano-util-same-parent/-/cssnano-util-same-parent-4.0.1.tgz#574082fb2859d2db433855835d9a8456ea18bbf3"
   integrity sha512-WcKx5OY+KoSIAxBW6UBBRay1U6vkYheCdjyVNDm85zt5K9mHoGOfsOsqIszfAqrQQFIIKgjh2+FDgIj/zsl21Q==
 
-cssnano@^4.1.10:
+cssnano@4.1.10:
   version "4.1.10"
   resolved "https://registry.yarnpkg.com/cssnano/-/cssnano-4.1.10.tgz#0ac41f0b13d13d465487e111b778d42da631b8b2"
   integrity sha512-5wny+F6H4/8RgNlaqab4ktc3e0/blKutmq8yNlBFXA//nSFFAqAngjNVRzUvCgYROULmZZUoosL/KSoZo5aUaQ==
@@ -1436,9 +1436,9 @@ lodash.uniq@^4.5.0:
   integrity sha1-0CJTc662Uq3BvILklFM5qEJ1R3M=
 
 lodash@^4.17.11:
-  version "4.17.15"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
-  integrity sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A==
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
+  integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
 
 log-symbols@^1.0.2:
   version "1.0.2"
@@ -2159,7 +2159,7 @@ postcss-zindex@^4.0.1:
     postcss "^7.0.0"
     uniqs "^2.0.0"
 
-postcss@^7.0.0, postcss@^7.0.1, postcss@^7.0.17, postcss@^7.0.5:
+postcss@7.0.18, postcss@^7.0.0, postcss@^7.0.1, postcss@^7.0.17, postcss@^7.0.5:
   version "7.0.18"
   resolved "https://registry.yarnpkg.com/postcss/-/postcss-7.0.18.tgz#4b9cda95ae6c069c67a4d933029eddd4838ac233"
   integrity sha512-/7g1QXXgegpF+9GJj4iN7ChGF40sYuGYJ8WZu8DZWnmhQ/G36hfdk3q9LBJmoK+lZ+yzZ5KYpOoxq7LF1BxE8g==