diff --git a/package.json b/package.json
index d64fc59..94644c4 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
     "gatsby-transformer-json": "^1.0.16",
     "gatsby-transformer-remark": "^1.7.39",
     "jest": "^22.4.3",
-    "lodash": "^4.17.5",
+    "lodash": "^4.17.21",
     "loop-protect": "^2.1.6",
     "mongodb": "^3.0.5",
     "prismjs": "^1.14.0",
diff --git a/yarn.lock b/yarn.lock
index 52a4eb8..c440787 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -111,7 +111,7 @@
 
 "@sinonjs/formatio@^2.0.0":
   version "2.0.0"
-  resolved "http://registry.npmjs.org/@sinonjs/formatio/-/formatio-2.0.0.tgz#84db7e9eb5531df18a8c5e0bfb6e449e55e654b2"
+  resolved "https://registry.npmjs.org/@sinonjs/formatio/-/formatio-2.0.0.tgz#84db7e9eb5531df18a8c5e0bfb6e449e55e654b2"
   dependencies:
     samsam "1.3.0"
 
@@ -798,7 +798,7 @@ babel-core@^6.0.0, babel-core@^6.24.1, babel-core@^6.26.0:
 
 babel-eslint@^8.0.1, babel-eslint@^8.2.2:
   version "8.2.2"
-  resolved "http://registry.npmjs.org/babel-eslint/-/babel-eslint-8.2.2.tgz#1102273354c6f0b29b4ea28a65f97d122296b68b"
+  resolved "https://registry.npmjs.org/babel-eslint/-/babel-eslint-8.2.2.tgz#1102273354c6f0b29b4ea28a65f97d122296b68b"
   dependencies:
     "@babel/code-frame" "^7.0.0-beta.40"
     "@babel/traverse" "^7.0.0-beta.40"
@@ -2640,7 +2640,7 @@ compressible@~2.0.13:
 
 compression@^1.5.2, compression@^1.6.2:
   version "1.7.2"
-  resolved "http://registry.npmjs.org/compression/-/compression-1.7.2.tgz#aaffbcd6aaf854b44ebb280353d5ad1651f59a69"
+  resolved "https://registry.npmjs.org/compression/-/compression-1.7.2.tgz#aaffbcd6aaf854b44ebb280353d5ad1651f59a69"
   dependencies:
     accepts "~1.3.4"
     bytes "3.0.0"
@@ -7665,23 +7665,15 @@ lodash@3.10.1:
   version "3.10.1"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-3.10.1.tgz#5bf45e8e49ba4189e17d482789dfd15bd140b7b6"
 
-lodash@4, lodash@^4.0.0, lodash@^4.1.0, lodash@^4.13.1, lodash@^4.14.0, lodash@^4.15.0, lodash@^4.17.2, lodash@^4.17.4, lodash@^4.17.5, lodash@^4.2.0, lodash@^4.2.1, lodash@^4.3.0, lodash@^4.6.1:
-  version "4.17.5"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.5.tgz#99a92d65c0272debe8c96b6057bc8fbfa3bed511"
+lodash@4, lodash@^4.0.0, lodash@^4.0.1, lodash@^4.1.0, lodash@^4.13.1, lodash@^4.14.0, lodash@^4.14.45, lodash@^4.15.0, lodash@^4.17.11, lodash@^4.17.2, lodash@^4.17.21, lodash@^4.17.4, lodash@^4.17.5, lodash@^4.2.0, lodash@^4.2.1, lodash@^4.3.0, lodash@^4.6.1:
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
+  integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
 
 lodash@4.11.1:
   version "4.11.1"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.11.1.tgz#a32106eb8e2ec8e82c241611414773c9df15f8bc"
 
-lodash@^4.0.1:
-  version "4.17.10"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.10.tgz#1b7793cf7259ea38fb3661d4d38b3260af8ae4e7"
-
-lodash@^4.14.45, lodash@^4.17.11:
-  version "4.17.11"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.11.tgz#b39ea6229ef607ecd89e2c8df12536891cac9b8d"
-  integrity sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg==
-
 log-symbols@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/log-symbols/-/log-symbols-1.0.2.tgz#376ff7b58ea3086a0f09facc74617eca501e1a18"