diff --git a/yarn.lock b/yarn.lock
index 3ab5f6ae..23f010cc 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2894,6 +2894,10 @@ lru-cache@^4.0.1:
     pseudomap "^1.0.1"
     yallist "^2.0.0"
 
+lunr@^0.7.2:
+  version "0.7.2"
+  resolved "https://registry.yarnpkg.com/lunr/-/lunr-0.7.2.tgz#79a30e932e216cba163541ee37a3607c12cd7281"
+
 macaddress@^0.2.8:
   version "0.2.8"
   resolved "https://registry.yarnpkg.com/macaddress/-/macaddress-0.2.8.tgz#5904dc537c39ec6dbefeae902327135fa8511f12"
@@ -2906,6 +2910,10 @@ map-obj@^1.0.0, map-obj@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/map-obj/-/map-obj-1.0.1.tgz#d933ceb9205d82bdcf4886f6742bdc2b4dea146d"
 
+"mark.js@github:julmot/mark.js":
+  version "8.8.0"
+  resolved "https://codeload.github.com/julmot/mark.js/tar.gz/878f2d36a0b15dc5ba2179ee9aabd640ea501fe2"
+
 math-expression-evaluator@^1.2.14:
   version "1.2.15"
   resolved "https://registry.yarnpkg.com/math-expression-evaluator/-/math-expression-evaluator-1.2.15.tgz#38dc5f0194c5bf5ff1c690ad4c4b64df71ac0187"