diff --git a/package.json b/package.json
index 87aa1ea..f59f46a 100644
--- a/package.json
+++ b/package.json
@@ -23,7 +23,7 @@
     "koa-router": "^7.4.0",
     "koa-static": "^5.0.0",
     "koa-views": "^6.2.0",
-    "lodash": "^4.17.11",
+    "lodash": "^4.17.13",
     "pug": "^2.0.3",
     "serverless-http": "^2.0.2"
   },
diff --git a/yarn.lock b/yarn.lock
index ba326f7..8c265a8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1627,10 +1627,10 @@ lazy-cache@^1.0.3:
   resolved "https://registry.yarnpkg.com/lazy-cache/-/lazy-cache-1.0.4.tgz#a1d78fc3a50474cb80845d3b3b6e1da49a446e8e"
   integrity sha1-odePw6UEdMuAhF07O24dpJpEbo4=
 
-lodash@^4.15.0, lodash@^4.17.11, lodash@^4.17.4:
-  version "4.17.11"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.11.tgz#b39ea6229ef607ecd89e2c8df12536891cac9b8d"
-  integrity sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg==
+lodash@^4.15.0, lodash@^4.17.13, lodash@^4.17.4:
+  version "4.17.13"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.13.tgz#0bdc3a6adc873d2f4e0c4bac285df91b64fc7b93"
+  integrity sha512-vm3/XWXfWtRua0FkUyEHBZy8kCPjErNBT9fJx8Zvs+U6zjqPbTUOpkaoum3O5uiA8sm+yNMHXfYkTUHFoMxFNA==
 
 longest@^1.0.1:
   version "1.0.1"