diff --git a/package-lock.json b/package-lock.json
index 9e83d610d83..9ae52606042 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1545,6 +1545,12 @@
           "requires": {
             "is-extglob": "^2.1.1"
           }
+        },
+        "typescript": {
+          "version": "3.7.5",
+          "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.5.tgz",
+          "integrity": "sha512-/P5lkRXkWHNAbcJIiHPfRoKqyd7bsyCma1hZNUGfn20qm64T6ZBlrzprymeu918H+mB/0rIg2gGK/BXkhhYgBw==",
+          "dev": true
         }
       }
     },
@@ -20534,9 +20540,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "uglify-js": {
diff --git a/package.json b/package.json
index a0d867ac09c..f4e16fe4beb 100644
--- a/package.json
+++ b/package.json
@@ -160,7 +160,7 @@
     "ts-morph": "5.0.0",
     "ts-node": "8.6.2",
     "typeorm": "0.2.24",
-    "typescript": "3.7.2",
+    "typescript": "3.8.3",
     "wrk": "1.2.0",
     "ws": "7.2.1"
   },
diff --git a/sample/01-cats-app/package-lock.json b/sample/01-cats-app/package-lock.json
index f82f17f1ff2..8a63c498dc6 100644
--- a/sample/01-cats-app/package-lock.json
+++ b/sample/01-cats-app/package-lock.json
@@ -11653,9 +11653,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/01-cats-app/package.json b/sample/01-cats-app/package.json
index 31ccc66953c..ff0e5503068 100644
--- a/sample/01-cats-app/package.json
+++ b/sample/01-cats-app/package.json
@@ -48,7 +48,7 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   },
   "jest": {
     "moduleFileExtensions": [
diff --git a/sample/02-gateways/package-lock.json b/sample/02-gateways/package-lock.json
index eacf96dbd19..2993e6a82be 100644
--- a/sample/02-gateways/package-lock.json
+++ b/sample/02-gateways/package-lock.json
@@ -11799,9 +11799,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "uid2": {
diff --git a/sample/02-gateways/package.json b/sample/02-gateways/package.json
index fa6ec080b0d..c9052388a48 100644
--- a/sample/02-gateways/package.json
+++ b/sample/02-gateways/package.json
@@ -53,6 +53,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/03-microservices/package-lock.json b/sample/03-microservices/package-lock.json
index a42fd6c313e..ff21d998401 100644
--- a/sample/03-microservices/package-lock.json
+++ b/sample/03-microservices/package-lock.json
@@ -11456,9 +11456,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/03-microservices/package.json b/sample/03-microservices/package.json
index 19c37318607..805c9e2f9a8 100644
--- a/sample/03-microservices/package.json
+++ b/sample/03-microservices/package.json
@@ -49,6 +49,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/04-grpc/package-lock.json b/sample/04-grpc/package-lock.json
index fc67798de6b..7c23a1dbdb5 100644
--- a/sample/04-grpc/package-lock.json
+++ b/sample/04-grpc/package-lock.json
@@ -11585,9 +11585,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/04-grpc/package.json b/sample/04-grpc/package.json
index 62031b506f1..ee926e5c934 100644
--- a/sample/04-grpc/package.json
+++ b/sample/04-grpc/package.json
@@ -50,6 +50,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/05-sql-typeorm/package-lock.json b/sample/05-sql-typeorm/package-lock.json
index a03d4787617..a2b8b43e6a5 100644
--- a/sample/05-sql-typeorm/package-lock.json
+++ b/sample/05-sql-typeorm/package-lock.json
@@ -11826,9 +11826,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/05-sql-typeorm/package.json b/sample/05-sql-typeorm/package.json
index 4432cb2219c..5271776f83f 100644
--- a/sample/05-sql-typeorm/package.json
+++ b/sample/05-sql-typeorm/package.json
@@ -49,6 +49,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/06-mongoose/package-lock.json b/sample/06-mongoose/package-lock.json
index 70cf808769b..749e14146b4 100644
--- a/sample/06-mongoose/package-lock.json
+++ b/sample/06-mongoose/package-lock.json
@@ -11623,9 +11623,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/06-mongoose/package.json b/sample/06-mongoose/package.json
index b057463b464..8795d159ccc 100644
--- a/sample/06-mongoose/package.json
+++ b/sample/06-mongoose/package.json
@@ -49,6 +49,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/07-sequelize/package-lock.json b/sample/07-sequelize/package-lock.json
index 7f433842046..d17d7d49a2a 100644
--- a/sample/07-sequelize/package-lock.json
+++ b/sample/07-sequelize/package-lock.json
@@ -11807,9 +11807,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ=="
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w=="
     },
     "union-value": {
       "version": "1.0.1",
diff --git a/sample/07-sequelize/package.json b/sample/07-sequelize/package.json
index 2b1a3416079..12235bad475 100644
--- a/sample/07-sequelize/package.json
+++ b/sample/07-sequelize/package.json
@@ -29,7 +29,7 @@
     "rxjs": "6.5.4",
     "sequelize": "5.21.5",
     "sequelize-typescript": "1.1.0",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   },
   "devDependencies": {
     "@types/sequelize": "4.28.8",
@@ -52,6 +52,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/08-webpack/package-lock.json b/sample/08-webpack/package-lock.json
index e2c7b01926f..569887eeda3 100644
--- a/sample/08-webpack/package-lock.json
+++ b/sample/08-webpack/package-lock.json
@@ -6176,9 +6176,9 @@
       "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c="
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ=="
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w=="
     },
     "union-value": {
       "version": "1.0.0",
diff --git a/sample/08-webpack/package.json b/sample/08-webpack/package.json
index 5ee2aa939ae..773b6d81b8f 100644
--- a/sample/08-webpack/package.json
+++ b/sample/08-webpack/package.json
@@ -16,7 +16,7 @@
     "@nestjs/platform-express": "6.11.11",
     "reflect-metadata": "0.1.13",
     "rxjs": "6.5.4",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   },
   "devDependencies": {
     "@types/node": "12.12.21",
diff --git a/sample/10-fastify/package-lock.json b/sample/10-fastify/package-lock.json
index c800cf5352f..96a297d6e9d 100644
--- a/sample/10-fastify/package-lock.json
+++ b/sample/10-fastify/package-lock.json
@@ -11378,9 +11378,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/10-fastify/package.json b/sample/10-fastify/package.json
index f02ef9816a0..6898da8fbef 100644
--- a/sample/10-fastify/package.json
+++ b/sample/10-fastify/package.json
@@ -48,6 +48,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/11-swagger/package-lock.json b/sample/11-swagger/package-lock.json
index a3581045ab6..aec51cb3d1c 100644
--- a/sample/11-swagger/package-lock.json
+++ b/sample/11-swagger/package-lock.json
@@ -11451,9 +11451,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/11-swagger/package.json b/sample/11-swagger/package.json
index 4450e21e3c0..5ded3bca43d 100644
--- a/sample/11-swagger/package.json
+++ b/sample/11-swagger/package.json
@@ -49,6 +49,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/12-graphql-schema-first/package-lock.json b/sample/12-graphql-schema-first/package-lock.json
index 02b081da9fd..e821f1fb460 100644
--- a/sample/12-graphql-schema-first/package-lock.json
+++ b/sample/12-graphql-schema-first/package-lock.json
@@ -2417,8 +2417,7 @@
         "glob-parent": "^5.1.0",
         "globby": "^10.0.1",
         "is-negated-glob": "^1.0.0",
-        "multimatch": "^4.0.0",
-        "typescript": "~3.7.2"
+        "multimatch": "^4.0.0"
       },
       "dependencies": {
         "globby": {
@@ -13019,9 +13018,10 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ=="
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
+      "dev": true
     },
     "unc-path-regex": {
       "version": "0.1.2",
diff --git a/sample/12-graphql-schema-first/package.json b/sample/12-graphql-schema-first/package.json
index ea460e8946f..394c64517f6 100644
--- a/sample/12-graphql-schema-first/package.json
+++ b/sample/12-graphql-schema-first/package.json
@@ -52,6 +52,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/13-mongo-typeorm/package-lock.json b/sample/13-mongo-typeorm/package-lock.json
index 2cd3657d34a..716bf35fe1f 100644
--- a/sample/13-mongo-typeorm/package-lock.json
+++ b/sample/13-mongo-typeorm/package-lock.json
@@ -11789,9 +11789,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/13-mongo-typeorm/package.json b/sample/13-mongo-typeorm/package.json
index 8946e2dba2f..54624ac731e 100644
--- a/sample/13-mongo-typeorm/package.json
+++ b/sample/13-mongo-typeorm/package.json
@@ -48,6 +48,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/14-mongoose-base/package-lock.json b/sample/14-mongoose-base/package-lock.json
index f5baeea09da..4727ca5f7c0 100644
--- a/sample/14-mongoose-base/package-lock.json
+++ b/sample/14-mongoose-base/package-lock.json
@@ -11537,9 +11537,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/14-mongoose-base/package.json b/sample/14-mongoose-base/package.json
index d3b5d927686..a48ee3736ce 100644
--- a/sample/14-mongoose-base/package.json
+++ b/sample/14-mongoose-base/package.json
@@ -46,6 +46,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/15-mvc/package-lock.json b/sample/15-mvc/package-lock.json
index ea5a0a50320..5b5ad68e431 100644
--- a/sample/15-mvc/package-lock.json
+++ b/sample/15-mvc/package-lock.json
@@ -11519,9 +11519,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "uglify-js": {
diff --git a/sample/15-mvc/package.json b/sample/15-mvc/package.json
index 1f1229ec886..b6d9b3e191a 100644
--- a/sample/15-mvc/package.json
+++ b/sample/15-mvc/package.json
@@ -47,6 +47,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/16-gateways-ws/package-lock.json b/sample/16-gateways-ws/package-lock.json
index d6a7824d12a..6a73dab49ed 100644
--- a/sample/16-gateways-ws/package-lock.json
+++ b/sample/16-gateways-ws/package-lock.json
@@ -11464,9 +11464,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/16-gateways-ws/package.json b/sample/16-gateways-ws/package.json
index 8ae44e932be..4bc9cfb0151 100644
--- a/sample/16-gateways-ws/package.json
+++ b/sample/16-gateways-ws/package.json
@@ -51,6 +51,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/17-mvc-fastify/package-lock.json b/sample/17-mvc-fastify/package-lock.json
index d27a03fbf0a..d6876ad32ae 100644
--- a/sample/17-mvc-fastify/package-lock.json
+++ b/sample/17-mvc-fastify/package-lock.json
@@ -10883,9 +10883,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "uglify-js": {
diff --git a/sample/17-mvc-fastify/package.json b/sample/17-mvc-fastify/package.json
index 3477c178a2d..766df0aef08 100644
--- a/sample/17-mvc-fastify/package.json
+++ b/sample/17-mvc-fastify/package.json
@@ -50,6 +50,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/18-context/package-lock.json b/sample/18-context/package-lock.json
index 8077b13f225..e76bc672d77 100644
--- a/sample/18-context/package-lock.json
+++ b/sample/18-context/package-lock.json
@@ -10602,9 +10602,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/18-context/package.json b/sample/18-context/package.json
index 43f8ca9fcf3..7a03bed6184 100644
--- a/sample/18-context/package.json
+++ b/sample/18-context/package.json
@@ -42,6 +42,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/19-auth-jwt/package-lock.json b/sample/19-auth-jwt/package-lock.json
index 110fa3a18cf..70107266b09 100644
--- a/sample/19-auth-jwt/package-lock.json
+++ b/sample/19-auth-jwt/package-lock.json
@@ -13102,9 +13102,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/19-auth-jwt/package.json b/sample/19-auth-jwt/package.json
index dfe7565a35a..f609bc463ac 100644
--- a/sample/19-auth-jwt/package.json
+++ b/sample/19-auth-jwt/package.json
@@ -52,7 +52,7 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   },
   "jest": {
     "moduleFileExtensions": [
diff --git a/sample/20-cache/package-lock.json b/sample/20-cache/package-lock.json
index 4eb3c460a1d..c74d13f31b4 100644
--- a/sample/20-cache/package-lock.json
+++ b/sample/20-cache/package-lock.json
@@ -11210,9 +11210,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/20-cache/package.json b/sample/20-cache/package.json
index be6b5f30d47..4a97eff8971 100644
--- a/sample/20-cache/package.json
+++ b/sample/20-cache/package.json
@@ -47,6 +47,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/21-serializer/package-lock.json b/sample/21-serializer/package-lock.json
index d5d866a7cb9..f379851e8b6 100644
--- a/sample/21-serializer/package-lock.json
+++ b/sample/21-serializer/package-lock.json
@@ -11138,9 +11138,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/21-serializer/package.json b/sample/21-serializer/package.json
index e3433b07a79..7c4b74bb61c 100644
--- a/sample/21-serializer/package.json
+++ b/sample/21-serializer/package.json
@@ -46,6 +46,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/22-graphql-prisma/package-lock.json b/sample/22-graphql-prisma/package-lock.json
index 389b45e938a..dfea0fc83ec 100644
--- a/sample/22-graphql-prisma/package-lock.json
+++ b/sample/22-graphql-prisma/package-lock.json
@@ -2372,8 +2372,7 @@
         "glob-parent": "^5.1.0",
         "globby": "^10.0.1",
         "is-negated-glob": "^1.0.0",
-        "multimatch": "^4.0.0",
-        "typescript": "~3.7.2"
+        "multimatch": "^4.0.0"
       },
       "dependencies": {
         "globby": {
@@ -13230,9 +13229,10 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ=="
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
+      "dev": true
     },
     "unc-path-regex": {
       "version": "0.1.2",
diff --git a/sample/22-graphql-prisma/package.json b/sample/22-graphql-prisma/package.json
index 841ec8d71a5..03cabc052e0 100644
--- a/sample/22-graphql-prisma/package.json
+++ b/sample/22-graphql-prisma/package.json
@@ -50,6 +50,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/22-graphql-prisma/yarn.lock b/sample/22-graphql-prisma/yarn.lock
index 5396de8b70d..b7c57fc9de6 100644
--- a/sample/22-graphql-prisma/yarn.lock
+++ b/sample/22-graphql-prisma/yarn.lock
@@ -7466,9 +7466,9 @@ typedarray@^0.0.6:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
 
-typescript@3.7.2:
-  version "3.7.2"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.7.2.tgz#27e489b95fa5909445e9fef5ee48d81697ad18fb"
+typescript@3.8.3:
+  version "3.8.3"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.8.3.tgz#409eb8544ea0335711205869ec458ab109ee1061"
 
 typescript@^3.6.4:
   version "3.7.4"
diff --git a/sample/23-graphql-code-first/package-lock.json b/sample/23-graphql-code-first/package-lock.json
index 5e3ddafc02d..348afd5cace 100644
--- a/sample/23-graphql-code-first/package-lock.json
+++ b/sample/23-graphql-code-first/package-lock.json
@@ -2407,8 +2407,7 @@
         "glob-parent": "^5.1.0",
         "globby": "^10.0.1",
         "is-negated-glob": "^1.0.0",
-        "multimatch": "^4.0.0",
-        "typescript": "~3.7.2"
+        "multimatch": "^4.0.0"
       },
       "dependencies": {
         "globby": {
@@ -13103,9 +13102,10 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ=="
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
+      "dev": true
     },
     "unc-path-regex": {
       "version": "0.1.2",
diff --git a/sample/23-graphql-code-first/package.json b/sample/23-graphql-code-first/package.json
index 94409ee30d3..c2da28dd786 100644
--- a/sample/23-graphql-code-first/package.json
+++ b/sample/23-graphql-code-first/package.json
@@ -51,6 +51,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/24-serve-static/package-lock.json b/sample/24-serve-static/package-lock.json
index dfac5ca1f0d..8a4bf94d522 100644
--- a/sample/24-serve-static/package-lock.json
+++ b/sample/24-serve-static/package-lock.json
@@ -11385,9 +11385,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/24-serve-static/package.json b/sample/24-serve-static/package.json
index 1132976007f..3e11df96a65 100644
--- a/sample/24-serve-static/package.json
+++ b/sample/24-serve-static/package.json
@@ -48,6 +48,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/25-dynamic-modules/package-lock.json b/sample/25-dynamic-modules/package-lock.json
index 5bd0d5808ba..62b6ab160f9 100644
--- a/sample/25-dynamic-modules/package-lock.json
+++ b/sample/25-dynamic-modules/package-lock.json
@@ -12541,9 +12541,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/25-dynamic-modules/package.json b/sample/25-dynamic-modules/package.json
index a0b79513553..a7856e8ef71 100644
--- a/sample/25-dynamic-modules/package.json
+++ b/sample/25-dynamic-modules/package.json
@@ -48,7 +48,7 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   },
   "jest": {
     "moduleFileExtensions": [
diff --git a/sample/26-queues/package-lock.json b/sample/26-queues/package-lock.json
index 823b1530a1c..5749928651b 100644
--- a/sample/26-queues/package-lock.json
+++ b/sample/26-queues/package-lock.json
@@ -13040,9 +13040,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/26-queues/package.json b/sample/26-queues/package.json
index 0419d90c5e9..052f3ecca79 100644
--- a/sample/26-queues/package.json
+++ b/sample/26-queues/package.json
@@ -51,7 +51,7 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   },
   "jest": {
     "moduleFileExtensions": [
diff --git a/sample/27-scheduling/package-lock.json b/sample/27-scheduling/package-lock.json
index 7ca56a8c0e6..5620f4aebe5 100644
--- a/sample/27-scheduling/package-lock.json
+++ b/sample/27-scheduling/package-lock.json
@@ -12662,9 +12662,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/27-scheduling/package.json b/sample/27-scheduling/package.json
index 35f40be757a..3938322e2ad 100644
--- a/sample/27-scheduling/package.json
+++ b/sample/27-scheduling/package.json
@@ -50,7 +50,7 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   },
   "jest": {
     "moduleFileExtensions": [