diff --git a/yarn.lock b/yarn.lock
index f46c25c..ea2b4c7 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2012,7 +2012,7 @@ core-js@^1.0.0:
   resolved "https://registry.yarnpkg.com/core-js/-/core-js-1.2.7.tgz#652294c14651db28fa93bd2d5ff2983a4f08c636"
   integrity sha1-ZSKUwUZR2yj6k70tX/KYOk8IxjY=
 
-core-js@^2.4.0, core-js@^2.5.3, core-js@^2.6.5:
+core-js@^2.4.0, core-js@^2.6.5:
   version "2.6.11"
   resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.6.11.tgz#38831469f9922bded8ee21c9dc46985e0399308c"
   integrity sha512-5wjnpaT/3dV+XB4borEsnAYQchn00XSgTAWKDkEqv+K8KevjbzmofK6hfJ9TZIlpj2N0xQpazy7PiRQiWHqzWg==
@@ -2246,9 +2246,9 @@ debug@^4.1.0:
     ms "^2.1.1"
 
 decode-uri-component@^0.2.0:
-  version "0.2.0"
-  resolved "https://registry.yarnpkg.com/decode-uri-component/-/decode-uri-component-0.2.0.tgz#eb3913333458775cb84cd1a1fae062106bb87545"
-  integrity sha1-6zkTMzRYd1y4TNGh+uBiEGu4dUU=
+  version "0.2.2"
+  resolved "https://registry.yarnpkg.com/decode-uri-component/-/decode-uri-component-0.2.2.tgz#e69dbe25d37941171dd540e024c444cd5188e1e9"
+  integrity sha512-FqUYQ+8o158GyGTrMFJms9qh3CqTKvAqgqsTnkLI8sKu0028orqBhxNMFkFen0zGyg6epACD32pjVk58ngIErQ==
 
 defaults@^1.0.3:
   version "1.0.3"
@@ -3570,15 +3570,6 @@ map-visit@^1.0.0:
   dependencies:
     object-visit "^1.0.0"
 
-markdown-navbar@^1.1.2:
-  version "1.1.2"
-  resolved "https://registry.yarnpkg.com/markdown-navbar/-/markdown-navbar-1.1.2.tgz#8d8fa0d7dce44e62695e627e3a2146c1b64dad60"
-  integrity sha512-A1ql1Eq86Jonl/4fXN5h3iP/RqnnG823GHDfKLX76SV76xZa5QmGYuGLx1r/yKe/JwscqzxUYTk5Qy++OqlT3g==
-  dependencies:
-    core-js "^2.5.3"
-    prop-types "^15.6.0"
-    react "^16.2.0"
-
 marked@^0.8.0:
   version "0.8.0"
   resolved "https://registry.yarnpkg.com/marked/-/marked-0.8.0.tgz#ec5c0c9b93878dc52dd54be8d0e524097bd81a99"
@@ -5417,7 +5408,7 @@ react-slick@~0.25.2:
     lodash.debounce "^4.0.8"
     resize-observer-polyfill "^1.5.0"
 
-react@16.12.0, react@^16.2.0:
+react@16.12.0:
   version "16.12.0"
   resolved "https://registry.yarnpkg.com/react/-/react-16.12.0.tgz#0c0a9c6a142429e3614834d5a778e18aa78a0b83"
   integrity sha512-fglqy3k5E+81pA8s+7K0/T3DBCF0ZDOher1elBFzF7O6arXJgzyu/FW+COxFvAWXJoJN9KIZbT2LXlukwphYTA==