diff --git a/yarn.lock b/yarn.lock
index 9c065ec..9bb1e24 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1704,6 +1704,11 @@ quotation@^1.0.0:
   version "0.2.0"
   resolved "https://codeload.github.com/mozilla/readability/tar.gz/d6fc38c4b45d9bc337e3579b53ffa7c188cc4d77"
 
+readability@mozilla/readability:
+  version "0.4.1"
+  uid e1972362816cd47e679d1a4bbbf923a58b8a88d5
+  resolved "https://codeload.github.com/mozilla/readability/tar.gz/e1972362816cd47e679d1a4bbbf923a58b8a88d5"
+
 readable-stream@^3.1.1:
   version "3.4.0"
   resolved "https://registry.yarnpkg.com/readable-stream/-/readable-stream-3.4.0.tgz#a51c26754658e0a3c21dbf59163bd45ba6f447fc"
@@ -2242,9 +2247,9 @@ type-check@~0.3.2:
     prelude-ls "~1.1.2"
 
 underscore@^1.3.1:
-  version "1.9.1"
-  resolved "https://registry.yarnpkg.com/underscore/-/underscore-1.9.1.tgz#06dce34a0e68a7babc29b365b8e74b8925203961"
-  integrity sha512-5/4etnCkd9c8gwgowi5/om/mYO5ajCaOgdzj/oW+0eQV9WxKBDZw5+ycmKmeaTXjInS/W0BzpGLo2xR2aBwZdg==
+  version "1.13.1"
+  resolved "https://registry.yarnpkg.com/underscore/-/underscore-1.13.1.tgz#0c1c6bd2df54b6b69f2314066d65b6cde6fcf9d1"
+  integrity sha512-hzSoAVtJF+3ZtiFX0VgfFPHEDRm7Y/QPjGyNo4TVdnDTdft3tr8hEkD25a1jC+TjTuE7tkHGKkhwCgs9dgBB2g==
 
 unfluff@^3.2.0:
   version "3.2.0"