diff --git a/package.json b/package.json
index 2935005..4eb5d62 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
   "author": "Originate",
   "license": "MIT",
   "devDependencies": {
-    "@types/express": "^4.17.8",
+    "@types/express": "^4.17.12",
     "prettier": "^2.1.2",
     "typescript": "^4.0.3"
   }
diff --git a/yarn.lock b/yarn.lock
index fab7bf7..32f2510 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -17,22 +17,22 @@
   dependencies:
     "@types/node" "*"
 
-"@types/express-serve-static-core@*":
-  version "4.17.9"
-  resolved "https://registry.yarnpkg.com/@types/express-serve-static-core/-/express-serve-static-core-4.17.9.tgz#2d7b34dcfd25ec663c25c85d76608f8b249667f1"
-  integrity sha512-DG0BYg6yO+ePW+XoDENYz8zhNGC3jDDEpComMYn7WJc4mY1Us8Rw9ax2YhJXxpyk2SF47PQAoQ0YyVT1a0bEkA==
+"@types/express-serve-static-core@*", "@types/express-serve-static-core@^4.17.18":
+  version "4.17.20"
+  resolved "https://registry.yarnpkg.com/@types/express-serve-static-core/-/express-serve-static-core-4.17.20.tgz#44caee029f2c26c46711da5e845cdc12167ad72d"
+  integrity sha512-8qqFN4W53IEWa9bdmuVrUcVkFemQWnt5DKPQ/oa8xKDYgtjCr2OO6NX5TIK49NLFr3mPYU2cLh92DQquC3oWWQ==
   dependencies:
     "@types/node" "*"
     "@types/qs" "*"
     "@types/range-parser" "*"
 
-"@types/express@^4.17.8":
-  version "4.17.8"
-  resolved "https://registry.yarnpkg.com/@types/express/-/express-4.17.8.tgz#3df4293293317e61c60137d273a2e96cd8d5f27a"
-  integrity sha512-wLhcKh3PMlyA2cNAB9sjM1BntnhPMiM0JOBwPBqttjHev2428MLEB4AYVN+d8s2iyCVZac+o41Pflm/ZH5vLXQ==
+"@types/express@^4.17.12":
+  version "4.17.12"
+  resolved "https://registry.yarnpkg.com/@types/express/-/express-4.17.12.tgz#4bc1bf3cd0cfe6d3f6f2853648b40db7d54de350"
+  integrity sha512-pTYas6FrP15B1Oa0bkN5tQMNqOcVXa9j4FTFtO8DWI9kppKib+6NJtfTOOLcwxuuYvcX2+dVG6et1SxW/Kc17Q==
   dependencies:
     "@types/body-parser" "*"
-    "@types/express-serve-static-core" "*"
+    "@types/express-serve-static-core" "^4.17.18"
     "@types/qs" "*"
     "@types/serve-static" "*"