diff --git a/package.json b/package.json
index 1f04290..9457d9f 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "micro-nosniff": "^1.0.1",
     "micro-ratelimit": "^0.4.0",
     "mjml": "^4.5.1",
-    "moment-timezone": "^0.5.27",
+    "moment-timezone": "^0.5.35",
     "ramda": "^0.26.1",
     "sanitize-html": "^1.20.1",
     "sparkpost": "^2.1.4",
diff --git a/yarn.lock b/yarn.lock
index 485d48f..3afd36f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3442,10 +3442,10 @@ mkdirp@^0.5.1, mkdirp@~0.5.1:
   dependencies:
     minimist "0.0.8"
 
-moment-timezone@^0.5.27:
-  version "0.5.27"
-  resolved "https://registry.yarnpkg.com/moment-timezone/-/moment-timezone-0.5.27.tgz#73adec8139b6fe30452e78f210f27b1f346b8877"
-  integrity sha512-EIKQs7h5sAsjhPCqN6ggx6cEbs94GK050254TIJySD1bzoM5JTYDwAU1IoVOeTOL6Gm27kYJ51/uuvq1kIlrbw==
+moment-timezone@^0.5.35:
+  version "0.5.35"
+  resolved "https://registry.yarnpkg.com/moment-timezone/-/moment-timezone-0.5.35.tgz#6fa2631bdbe8ff04f6b8753f7199516be6dc9839"
+  integrity sha512-cY/pBOEXepQvlgli06ttCTKcIf8cD1nmNwOKQQAdHBqYApQSpAqotBMX0RJZNgMp6i0PlZuf1mFtnlyEkwyvFw==
   dependencies:
     moment ">= 2.9.0"