These are not needed, packages provide types themselves

backend/package.json

@@ -58,7 +58,6 @@
         "@types/chai": "^4.2.3",
         "@types/compression": "^1.0.1",
         "@types/concurrently": "^4.1.0",
-        "@types/connect-mongo": "^3.0.0",
         "@types/errorhandler": "^0.0.32",
         "@types/eslint": "^6.1.1",
         "@types/express": "^4.17.1",
@@ -80,7 +79,6 @@
         "@types/request-promise": "^4.1.44",
         "@types/shelljs": "^0.8.5",
         "@types/supertest": "^2.0.8",
-        "@types/winston": "^2.4.4",
         "@typescript-eslint/eslint-plugin": "^2.3.1",
         "@typescript-eslint/parser": "^2.3.1",
         "chai": "^4.2.0",

backend/yarn.lock

@@ -575,13 +575,6 @@
   dependencies:
     "@types/express" "*"
 
-"@types/connect-mongo@^3.0.0":
-  version "3.1.3"
-  resolved "https://registry.yarnpkg.com/@types/connect-mongo/-/connect-mongo-3.1.3.tgz#4ff124a30e530dd2dae4725cfd28ca0b9badbfd1"
-  integrity sha512-h162kWzfphobvJOttkYKLXEQQmZuOlOSA1IszOusQhguCGf+/B8k4H373SJ0BtVv+qkXP/lziEuUfZDNfzZ1tw==
-  dependencies:
-    connect-mongo "*"
-
 "@types/connect@*":
   version "3.4.33"
   resolved "https://registry.yarnpkg.com/@types/connect/-/connect-3.4.33.tgz#31610c901eca573b8713c3330abc6e6b9f588546"
@@ -884,13 +877,6 @@
   resolved "https://registry.yarnpkg.com/@types/tough-cookie/-/tough-cookie-4.0.0.tgz#fef1904e4668b6e5ecee60c52cc6a078ffa6697d"
   integrity sha512-I99sngh224D0M7XgW1s120zxCt3VYQ3IQsuw3P3jbq5GG4yc79+ZjyKznyOGIQrflfylLgcfekeZW/vk0yng6A==
 
-"@types/winston@^2.4.4":
-  version "2.4.4"
-  resolved "https://registry.yarnpkg.com/@types/winston/-/winston-2.4.4.tgz#48cc744b7b42fad74b9a2e8490e0112bd9a3d08d"
-  integrity sha512-BVGCztsypW8EYwJ+Hq+QNYiT/MUyCif0ouBH+flrY66O5W+KIXAMML6E/0fJpm7VjIzgangahl5S03bJJQGrZw==
-  dependencies:
-    winston "*"
-
 "@types/yargs-parser@*":
   version "15.0.0"
   resolved "https://registry.yarnpkg.com/@types/yargs-parser/-/yargs-parser-15.0.0.tgz#cb3f9f741869e20cce330ffbeb9271590483882d"
@@ -1879,7 +1865,7 @@ [email protected]:
   resolved "https://registry.yarnpkg.com/connect-flash/-/connect-flash-0.1.1.tgz#d8630f26d95a7f851f9956b1e8cc6732f3b6aa30"
   integrity sha1-2GMPJtlaf4UfmVax6MxnMvO2qjA=
 
-connect-mongo@*, connect-mongo@^3.0.0:
+connect-mongo@^3.0.0:
   version "3.2.0"
   resolved "https://registry.yarnpkg.com/connect-mongo/-/connect-mongo-3.2.0.tgz#20f776c7f2a9d8144fc76cfdcbf33edb05eb4d52"
   integrity sha512-0Mx88079Z20CG909wCFlR3UxhMYGg6Ibn1hkIje1hwsqOLWtL9HJV+XD0DAjUvQScK6WqY/FA8tSVQM9rR64Rw==
@@ -6649,7 +6635,7 @@ winston-transport@^4.3.0:
     readable-stream "^2.3.6"
     triple-beam "^1.2.0"
 
-winston@*, winston@^3.2.1:
+winston@^3.2.1:
   version "3.2.1"
   resolved "https://registry.yarnpkg.com/winston/-/winston-3.2.1.tgz#63061377976c73584028be2490a1846055f77f07"
   integrity sha512-zU6vgnS9dAWCEKg/QYigd6cgMVVNwyTzKs81XZtTFuRwJOcDdBg7AU0mXVyNbs7O5RH2zdv+BdNZUlx7mXPuOw==