diff --git a/package.json b/package.json
index 0433349..7d5844e 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "@types/express": "^4.17.8"
   },
   "devDependencies": {
-    "@types/express": "^4.17.8",
+    "@types/express": "^4.17.9",
     "@types/node": "^14.14.20",
     "@types/supertest": "^2.0.10",
     "@types/tape": "^4.13.0",
diff --git a/yarn.lock b/yarn.lock
index 74c1f92..ec134cd 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -89,10 +89,10 @@
     "@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@^4.17.9":
+  version "4.17.9"
+  resolved "https://registry.yarnpkg.com/@types/express/-/express-4.17.9.tgz#f5f2df6add703ff28428add52bdec8a1091b0a78"
+  integrity sha512-SDzEIZInC4sivGIFY4Sz1GG6J9UObPwCInYJjko2jzOf/Imx/dlpume6Xxwj1ORL82tBbmN4cPDIDkLbWHk9hw==
   dependencies:
     "@types/body-parser" "*"
     "@types/express-serve-static-core" "*"