diff --git a/package.json b/package.json
index 72cf626..39489a1 100644
--- a/package.json
+++ b/package.json
@@ -56,7 +56,7 @@
     "inflection": "^1.12.0",
     "is-plain-object": "^2.0.4",
     "moment": "^2.22.2",
-    "moment-timezone": "^0.5.21",
+    "moment-timezone": "^0.5.35",
     "mongodb": "^3.1.4",
     "object-path": "^0.11.4",
     "passport": "^0.4.0",
diff --git a/yarn.lock b/yarn.lock
index f937b76..4f1a1da 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -158,7 +158,7 @@
 
 "@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"
 
@@ -2730,9 +2730,9 @@ mocha@^5.2.0:
     mkdirp "0.5.1"
     supports-color "5.4.0"
 
-moment-timezone@^0.5.21:
-  version "0.5.21"
-  resolved "https://registry.yarnpkg.com/moment-timezone/-/moment-timezone-0.5.21.tgz#3cba247d84492174dbf71de2a9848fa13207b845"
+moment-timezone@^0.5.35:
+  version "0.5.35"
+  resolved "https://registry.yarnpkg.com/moment-timezone/-/moment-timezone-0.5.35.tgz#6fa2631bdbe8ff04f6b8753f7199516be6dc9839"
   dependencies:
     moment ">= 2.9.0"