diff --git a/package.json b/package.json
index 011f390..cb22b80 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
     "imagemin": "^5.3.1",
     "imagemin-mozjpeg": "^6.0.0",
     "imagemin-pngquant": "^5.0.1",
-    "lodash": "^4.16.1",
+    "lodash": "^4.17.21",
     "mailchimp-api": "^2.0.7",
     "memorystore": "^1.6.1",
     "moment-timezone": "^0.5.13",
diff --git a/yarn.lock b/yarn.lock
index 2eee21f..5d75e50 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1007,7 +1007,7 @@ compressible@~2.0.13:
 
 compression@^1.7.1:
   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"
@@ -1286,6 +1286,12 @@ debug@^3.1.0:
   dependencies:
     ms "2.0.0"
 
+debug@^4.3.0:
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-4.3.1.tgz#f0d229c505e0c6d8c49ac553d1b13dc183f6b2ee"
+  dependencies:
+    ms "2.1.2"
+
 debug@~0.7.2:
   version "0.7.4"
   resolved "https://registry.yarnpkg.com/debug/-/debug-0.7.4.tgz#06e1ea8082c2cb14e39806e22e2f6f757f92af39"
@@ -3589,13 +3595,9 @@ lodash.uniq@^4.5.0:
   version "4.5.0"
   resolved "https://registry.yarnpkg.com/lodash.uniq/-/lodash.uniq-4.5.0.tgz#d0225373aeb652adc1bc82e4945339a842754773"
 
-lodash@^4.13.1:
-  version "4.17.4"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"
-
-lodash@^4.16.1, lodash@^4.17.4:
-  version "4.17.5"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.5.tgz#99a92d65c0272debe8c96b6057bc8fbfa3bed511"
+lodash@^4.13.1, lodash@^4.17.21, lodash@^4.17.4:
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
 
 lodash@~1.0.1:
   version "1.0.2"
@@ -3675,6 +3677,13 @@ lru-cache@^4.0.1:
     pseudomap "^1.0.2"
     yallist "^2.1.2"
 
+lru-cache@^4.0.3:
+  version "4.1.5"
+  resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-4.1.5.tgz#8bbe50ea85bed59bc9e33dcab8235ee9bcf443cd"
+  dependencies:
+    pseudomap "^1.0.2"
+    yallist "^2.1.2"
+
 macaddress@^0.2.8:
   version "0.2.8"
   resolved "https://registry.yarnpkg.com/macaddress/-/macaddress-0.2.8.tgz#5904dc537c39ec6dbefeae902327135fa8511f12"
@@ -3726,6 +3735,13 @@ media-typer@0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/media-typer/-/media-typer-0.3.0.tgz#8710d7af0aa626f8fffa1ce00168545263255748"
 
+memorystore@^1.6.1:
+  version "1.6.6"
+  resolved "https://registry.yarnpkg.com/memorystore/-/memorystore-1.6.6.tgz#8ecb5bbda1d7b2c0587f04c570030c1644ef4d76"
+  dependencies:
+    debug "^4.3.0"
+    lru-cache "^4.0.3"
+
 meow@^3.1.0, meow@^3.3.0, meow@^3.5.0:
   version "3.7.0"
   resolved "https://registry.yarnpkg.com/meow/-/meow-3.7.0.tgz#72cb668b425228290abbfa856892587308a801fb"
@@ -3920,6 +3936,10 @@ ms@2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.1.tgz#30a5864eb3ebb0a66f2ebe6d727af06a09d86e0a"
 
+ms@2.1.2:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.2.tgz#d09d1f357b443f493382a8eb3ccd183872ae6009"
+
 multer@^1.2.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/multer/-/multer-1.3.0.tgz#092b2670f6846fa4914965efc8cf94c20fec6cd2"
@@ -4180,7 +4200,7 @@ onecolor@^3.0.4:
 
 onetime@^1.0.0:
   version "1.1.0"
-  resolved "http://registry.npmjs.org/onetime/-/onetime-1.1.0.tgz#a1f7838f8314c516f05ecefcbc4ccfe04b4ed789"
+  resolved "https://registry.npmjs.org/onetime/-/onetime-1.1.0.tgz#a1f7838f8314c516f05ecefcbc4ccfe04b4ed789"
 
 optimist@^0.6.1:
   version "0.6.1"