diff --git a/package.json b/package.json
index a25a396d..58967b50 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
     "cookie-parser": "^1.4.3",
     "dotenv": "^4.0.0",
     "express": "^4.14.0",
-    "express-session": "^1.15.6",
+    "express-session": "^1.18.1",
     "jsonwebtoken": "^8.1.0",
     "passport": "^0.4.0",
     "passport-google-oauth20": "^1.0.0",
diff --git a/yarn.lock b/yarn.lock
index 48c9f68a..61017a2d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -413,18 +413,24 @@ cookie-signature@1.0.6:
   version "1.0.6"
   resolved "https://registry.yarnpkg.com/cookie-signature/-/cookie-signature-1.0.6.tgz#e303a882b342cc3ee8ca513a79999734dab3ae2c"
 
+cookie-signature@1.0.7:
+  version "1.0.7"
+  resolved "https://registry.yarnpkg.com/cookie-signature/-/cookie-signature-1.0.7.tgz#ab5dd7ab757c54e60f37ef6550f481c426d10454"
+  integrity sha512-NXdYc3dLr47pBkpUCHtKSwIOQXLVn8dZEuywboCOJY/osA0wFSLlSawr3KN8qXJEyX66FcONTH8EIlVuK0yyFA==
+
 cookie@0.3.1:
   version "0.3.1"
   resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.3.1.tgz#e7e0a1f9ef43b4c8ba925c5c5a96e806d16873bb"
 
+cookie@0.7.2:
+  version "0.7.2"
+  resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.7.2.tgz#556369c472a2ba910f2979891b526b3436237ed7"
+  integrity sha512-yki5XnKuf750l50uGTllt6kKILY4nQ1eNIQatoXEByZ5dWgnKqbnqmTrBE5B4N7lrMJKQ2ytWMiTO2o0v6Ew/w==
+
 core-util-is@1.0.2, core-util-is@~1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
 
-crc@3.4.4:
-  version "3.4.4"
-  resolved "https://registry.yarnpkg.com/crc/-/crc-3.4.4.tgz#9da1e980e3bd44fc5c93bf5ab3da3378d85e466b"
-
 create-error-class@^3.0.0:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/create-error-class/-/create-error-class-3.0.2.tgz#06be7abef947a3f14a30fd610671d401bca8b7b6"
@@ -503,6 +509,11 @@ depd@1.1.1, depd@~1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/depd/-/depd-1.1.1.tgz#5783b4e1c459f06fa5ca27f991f3d06e7a310359"
 
+depd@~2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/depd/-/depd-2.0.0.tgz#b696163cc757560d09cf22cc8fad1571b79e76df"
+  integrity sha512-g7nH6P6dyDioJogAAGprGpCtVImJhpPk/roCzdb3fIh61/s/nPsfR6onyMwkCAR/OlC3yBC0lESvUoQEAssIrw==
+
 destroy@~1.0.4:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/destroy/-/destroy-1.0.4.tgz#978857442c44749e4206613e37946205826abd80"
@@ -697,19 +708,19 @@ expand-range@^1.8.1:
   dependencies:
     fill-range "^2.1.0"
 
-express-session@^1.15.6:
-  version "1.15.6"
-  resolved "https://registry.yarnpkg.com/express-session/-/express-session-1.15.6.tgz#47b4160c88f42ab70fe8a508e31cbff76757ab0a"
+express-session@^1.18.1:
+  version "1.18.1"
+  resolved "https://registry.yarnpkg.com/express-session/-/express-session-1.18.1.tgz#88d0bbd41878882840f24ec6227493fcb167e8d5"
+  integrity sha512-a5mtTqEaZvBCL9A9aqkrtfz+3SMDhOVUnjafjo+s7A9Txkq+SVX2DLvSp1Zrv4uCXa3lMSK3viWnh9Gg07PBUA==
   dependencies:
-    cookie "0.3.1"
-    cookie-signature "1.0.6"
-    crc "3.4.4"
+    cookie "0.7.2"
+    cookie-signature "1.0.7"
     debug "2.6.9"
-    depd "~1.1.1"
-    on-headers "~1.0.1"
-    parseurl "~1.3.2"
+    depd "~2.0.0"
+    on-headers "~1.0.2"
+    parseurl "~1.3.3"
+    safe-buffer "5.2.1"
     uid-safe "~2.1.5"
-    utils-merge "1.0.1"
 
 express@^4.14.0:
   version "4.16.2"
@@ -1668,9 +1679,10 @@ on-finished@~2.3.0:
   dependencies:
     ee-first "1.1.1"
 
-on-headers@~1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/on-headers/-/on-headers-1.0.1.tgz#928f5d0f470d49342651ea6794b0857c100693f7"
+on-headers@~1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/on-headers/-/on-headers-1.0.2.tgz#772b0ae6aaa525c399e489adfad90c403eb3c28f"
+  integrity sha512-pZAE+FJLoyITytdqK0U5s+FIpjN0JP3OzFi/u8Rx+EV5/W+JTWGXG8xFzevE7AjBfDqHv/8vL8qQsIhHnqRkrA==
 
 once@^1.3.0, once@^1.3.3:
   version "1.4.0"
@@ -1736,6 +1748,11 @@ parseurl@~1.3.2:
   version "1.3.2"
   resolved "https://registry.yarnpkg.com/parseurl/-/parseurl-1.3.2.tgz#fc289d4ed8993119460c156253262cdc8de65bf3"
 
+parseurl@~1.3.3:
+  version "1.3.3"
+  resolved "https://registry.yarnpkg.com/parseurl/-/parseurl-1.3.3.tgz#9da19e7bee8d12dff0513ed5b76957793bc2e8d4"
+  integrity sha512-CiyeOxFT/JZyN5m0z9PfXw4SCBJ6Sygz1Dpl0wqjlhDEGGBP1GnsUVEL0p63hoG1fcj3fHynXi9NYO4nWOL+qQ==
+
 passport-google-oauth20@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/passport-google-oauth20/-/passport-google-oauth20-1.0.0.tgz#3b960e8a1d70d1dbe794615c827c68c40392a5d0"
@@ -2024,6 +2041,11 @@ safe-buffer@5.1.1, safe-buffer@^5.0.1, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.1.tgz#893312af69b2123def71f57889001671eeb2c853"
 
+safe-buffer@5.2.1:
+  version "5.2.1"
+  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.2.1.tgz#1eaf9fa9bdb1fdd4ec75f58f9cdb4e6b7827eec6"
+  integrity sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ==
+
 semver-diff@^2.0.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/semver-diff/-/semver-diff-2.1.0.tgz#4bbb8437c8d37e4b0cf1a68fd726ec6d645d6d36"