diff --git a/package.json b/package.json
index da2e47e..25fb27e 100644
--- a/package.json
+++ b/package.json
@@ -49,7 +49,7 @@
     "@types/chai": "^4.1.7",
     "@types/connect-ensure-login": "^0.1.4",
     "@types/debug": "^0.0.31",
-    "@types/express": "^4.16.0",
+    "@types/express": "^4.17.13",
     "@types/express-flash": "^0.0.0",
     "@types/express-session": "^1.15.11",
     "@types/mocha": "^5.2.5",
diff --git a/yarn.lock b/yarn.lock
index 843fb4f..e636de9 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -154,13 +154,13 @@
     "@types/connect-flash" "*"
     "@types/express" "*"
 
-"@types/express-serve-static-core@*":
-  version "4.16.0"
-  resolved "https://registry.yarnpkg.com/@types/express-serve-static-core/-/express-serve-static-core-4.16.0.tgz#fdfe777594ddc1fe8eb8eccce52e261b496e43e7"
-  integrity sha512-lTeoCu5NxJU4OD9moCgm0ESZzweAx0YqsAcab6OB0EB3+As1OaHtKnaGJvcngQxYsi9UNv0abn4/DRavrRxt4w==
+"@types/express-serve-static-core@*", "@types/express-serve-static-core@^4.17.18":
+  version "4.17.23"
+  resolved "https://registry.yarnpkg.com/@types/express-serve-static-core/-/express-serve-static-core-4.17.23.tgz#721c371fc53fe7b3ea40d8977b209b90cb275f58"
+  integrity sha512-WYqTtTPTJn9kXMdnAH5HPPb7ctXvBpP4PfuOb8MV4OHPQWHhDZixGlhgR159lJPpKm23WOdoCkt2//cCEaOJkw==
   dependencies:
-    "@types/events" "*"
     "@types/node" "*"
+    "@types/qs" "*"
     "@types/range-parser" "*"
 
 "@types/express-session@^1.15.11":
@@ -172,13 +172,14 @@
     "@types/express" "*"
     "@types/node" "*"
 
-"@types/express@*", "@types/express@^4.16.0":
-  version "4.16.0"
-  resolved "https://registry.yarnpkg.com/@types/express/-/express-4.16.0.tgz#6d8bc42ccaa6f35cf29a2b7c3333cb47b5a32a19"
-  integrity sha512-TtPEYumsmSTtTetAPXlJVf3kEqb6wZK0bZojpJQrnD/djV4q1oB6QQ8aKvKqwNPACoe02GNiy5zDzcYivR5Z2w==
+"@types/express@*", "@types/express@^4.17.13":
+  version "4.17.13"
+  resolved "https://registry.yarnpkg.com/@types/express/-/express-4.17.13.tgz#a76e2995728999bab51a33fabce1d705a3709034"
+  integrity sha512-6bSZTPaTIACxn48l50SR+axgrqm6qXFIxrdAKaG6PaJk3+zuUr35hBlgT7vOmJcum+OEaIBLtHV/qloEAFITeA==
   dependencies:
     "@types/body-parser" "*"
-    "@types/express-serve-static-core" "*"
+    "@types/express-serve-static-core" "^4.17.18"
+    "@types/qs" "*"
     "@types/serve-static" "*"
 
 "@types/geojson@^1.0.0":
@@ -237,6 +238,11 @@
   dependencies:
     "@types/express" "*"
 
+"@types/qs@*":
+  version "6.9.6"
+  resolved "https://registry.yarnpkg.com/@types/qs/-/qs-6.9.6.tgz#df9c3c8b31a247ec315e6996566be3171df4b3b1"
+  integrity sha512-0/HnwIfW4ki2D8L8c9GVcG5I72s9jP5GSLVF0VIXDW00kmIpA6O33G7a8n59Tmh7Nz0WUC3rSb7PTY/sdW2JzA==
+
 "@types/range-parser@*":
   version "1.2.2"
   resolved "https://registry.yarnpkg.com/@types/range-parser/-/range-parser-1.2.2.tgz#fa8e1ad1d474688a757140c91de6dace6f4abc8d"