diff --git a/backend/package.json b/backend/package.json
index 88a8f907..5b10c35a 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -53,7 +53,7 @@
     "@nestjs/cli": "7.6.0",
     "@nestjs/schematics": "7.3.1",
     "@nestjs/testing": "7.6.15",
-    "@types/express": "4.17.11",
+    "@types/express": "4.17.23",
     "@types/jest": "26.0.22",
     "@types/node": "14.14.41",
     "@types/passport-local": "1.0.33",
diff --git a/backend/yarn.lock b/backend/yarn.lock
index 615dc537..73e4271e 100644
--- a/backend/yarn.lock
+++ b/backend/yarn.lock
@@ -884,14 +884,15 @@
     "@types/qs" "*"
     "@types/range-parser" "*"
 
-"@types/express-serve-static-core@^4.17.18":
-  version "4.17.18"
-  resolved "https://registry.yarnpkg.com/@types/express-serve-static-core/-/express-serve-static-core-4.17.18.tgz#8371e260f40e0e1ca0c116a9afcd9426fa094c40"
-  integrity sha512-m4JTwx5RUBNZvky/JJ8swEJPKFd8si08pPF2PfizYjGZOKr/svUWPcoUmLow6MmPzhasphB7gSTINY67xn3JNA==
+"@types/express-serve-static-core@^4.17.33":
+  version "4.19.6"
+  resolved "https://registry.yarnpkg.com/@types/express-serve-static-core/-/express-serve-static-core-4.19.6.tgz#e01324c2a024ff367d92c66f48553ced0ab50267"
+  integrity sha512-N4LZ2xG7DatVqhCZzOGb1Yi5lMbXSZcmdLDe9EzSndPV2HpWYWzRbaerl2n27irrm94EPpprqa8KpskPT085+A==
   dependencies:
     "@types/node" "*"
     "@types/qs" "*"
     "@types/range-parser" "*"
+    "@types/send" "*"
 
 "@types/express@*":
   version "4.17.9"
@@ -903,13 +904,13 @@
     "@types/qs" "*"
     "@types/serve-static" "*"
 
-"@types/express@4.17.11":
-  version "4.17.11"
-  resolved "https://registry.yarnpkg.com/@types/express/-/express-4.17.11.tgz#debe3caa6f8e5fcda96b47bd54e2f40c4ee59545"
-  integrity sha512-no+R6rW60JEc59977wIxreQVsIEOAYwgCqldrA/vkpCnbD7MqTefO97lmoBe4WE0F156bC4uLSP1XHDOySnChg==
+"@types/express@4.17.23":
+  version "4.17.23"
+  resolved "https://registry.yarnpkg.com/@types/express/-/express-4.17.23.tgz#35af3193c640bfd4d7fe77191cd0ed411a433bef"
+  integrity sha512-Crp6WY9aTYP3qPi2wGDo9iUe/rceX01UMhnF1jmwDcKCFM6cx7YhGP/Mpr3y9AASpfHixIG0E6azCcL5OcDHsQ==
   dependencies:
     "@types/body-parser" "*"
-    "@types/express-serve-static-core" "^4.17.18"
+    "@types/express-serve-static-core" "^4.17.33"
     "@types/qs" "*"
     "@types/serve-static" "*"
 
@@ -979,6 +980,11 @@
   resolved "https://registry.yarnpkg.com/@types/mime/-/mime-2.0.3.tgz#c893b73721db73699943bfc3653b1deb7faa4a3a"
   integrity sha512-Jus9s4CDbqwocc5pOAnh8ShfrnMcPHuJYzVcSUU7lrh8Ni5HuIqX3oilL86p3dlTrk0LzHRCgA/GQ7uNCw6l2Q==
 
+"@types/mime@^1":
+  version "1.3.5"
+  resolved "https://registry.yarnpkg.com/@types/mime/-/mime-1.3.5.tgz#1ef302e01cf7d2b5a0fa526790c9123bf1d06690"
+  integrity sha512-/pyBZWSLD2n0dcHE3hq8s8ZvcETHtEuF+3E7XVt0Ig2nvsVQXdghHVcEkIWjy9A0wKfTn97a/PSDYohKIlnP/w==
+
 "@types/node@*", "@types/node@>= 8":
   version "14.14.10"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-14.14.10.tgz#5958a82e41863cfc71f2307b3748e3491ba03785"
@@ -1038,6 +1044,14 @@
   resolved "https://registry.yarnpkg.com/@types/range-parser/-/range-parser-1.2.3.tgz#7ee330ba7caafb98090bece86a5ee44115904c2c"
   integrity sha512-ewFXqrQHlFsgc09MK5jP5iR7vumV/BYayNC6PgJO2LPe8vrnNFyjQjSppfEngITi0qvfKtzFvgKymGheFM9UOA==
 
+"@types/send@*":
+  version "0.17.5"
+  resolved "https://registry.yarnpkg.com/@types/send/-/send-0.17.5.tgz#d991d4f2b16f2b1ef497131f00a9114290791e74"
+  integrity sha512-z6F2D3cOStZvuk2SaP6YrwkNO65iTZcwA2ZkSABegdkAh/lf+Aa/YQndZVfmEXT5vgAp6zv06VQ3ejSVjAny4w==
+  dependencies:
+    "@types/mime" "^1"
+    "@types/node" "*"
+
 "@types/serve-static@*":
   version "1.13.8"
   resolved "https://registry.yarnpkg.com/@types/serve-static/-/serve-static-1.13.8.tgz#851129d434433c7082148574ffec263d58309c46"