diff --git a/package-lock.json b/package-lock.json
index 8dc417e..e6dd73a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -32,7 +32,7 @@
         "prettier": "2.2.1",
         "reflect-metadata": "0.1.13",
         "rxjs": "6.6.6",
-        "telegraf": "4.1.2",
+        "telegraf": "4.2.1",
         "typedoc": "0.20.30",
         "typescript": "4.2.3"
       },
@@ -4155,9 +4155,9 @@
       }
     },
     "node_modules/telegraf": {
-      "version": "4.1.2",
-      "resolved": "https://registry.npmjs.org/telegraf/-/telegraf-4.1.2.tgz",
-      "integrity": "sha512-YZljmryOhcZgrRWU28AV7UhZ3y+jKRwPwB49PSDDmW7tKtQHrSLBkW0pCoLniDlQVz+ICBGCWXZlHfqDkQ2iNQ==",
+      "version": "4.2.1",
+      "resolved": "https://registry.npmjs.org/telegraf/-/telegraf-4.2.1.tgz",
+      "integrity": "sha512-tSww8MY+XmT2K3Kq0Y7drGjpl36AQQEg0WWBUByfFcbG6ChiIgOFycPMkB+g5jSL+RqaP7QA4EybAztmI1227g==",
       "dev": true,
       "dependencies": {
         "abort-controller": "^3.0.0",
@@ -4168,7 +4168,7 @@
         "p-timeout": "^4.1.0",
         "safe-compare": "^1.1.4",
         "sandwich-stream": "^2.0.2",
-        "typegram": "^3.1.10"
+        "typegram": "^3.2.0"
       },
       "bin": {
         "telegraf": "bin/telegraf"
@@ -4326,9 +4326,9 @@
       }
     },
     "node_modules/typegram": {
-      "version": "3.1.10",
-      "resolved": "https://registry.npmjs.org/typegram/-/typegram-3.1.10.tgz",
-      "integrity": "sha512-VfsuVP4uqk9yllRpaGp9yFpzvLKXghFCOSc3TVi+fy1IL2Bi4z2gJ9rMgVSSug4pWQP8Ui7Isvl14yYV8VEWaQ==",
+      "version": "3.2.1",
+      "resolved": "https://registry.npmjs.org/typegram/-/typegram-3.2.1.tgz",
+      "integrity": "sha512-Vq3kOF/UtsSvlS+goKMfRerXi3hGSDanEoB4UztZLvcPkAX9GS0ejYruAb5MpVSZjxX89szxf+2gxrNeZyuhBg==",
       "dev": true
     },
     "node_modules/typescript": {
@@ -7671,9 +7671,9 @@
       }
     },
     "telegraf": {
-      "version": "4.1.2",
-      "resolved": "https://registry.npmjs.org/telegraf/-/telegraf-4.1.2.tgz",
-      "integrity": "sha512-YZljmryOhcZgrRWU28AV7UhZ3y+jKRwPwB49PSDDmW7tKtQHrSLBkW0pCoLniDlQVz+ICBGCWXZlHfqDkQ2iNQ==",
+      "version": "4.2.1",
+      "resolved": "https://registry.npmjs.org/telegraf/-/telegraf-4.2.1.tgz",
+      "integrity": "sha512-tSww8MY+XmT2K3Kq0Y7drGjpl36AQQEg0WWBUByfFcbG6ChiIgOFycPMkB+g5jSL+RqaP7QA4EybAztmI1227g==",
       "dev": true,
       "requires": {
         "abort-controller": "^3.0.0",
@@ -7684,7 +7684,7 @@
         "p-timeout": "^4.1.0",
         "safe-compare": "^1.1.4",
         "sandwich-stream": "^2.0.2",
-        "typegram": "^3.1.10"
+        "typegram": "^3.2.0"
       },
       "dependencies": {
         "debug": {
@@ -7802,9 +7802,9 @@
       "dev": true
     },
     "typegram": {
-      "version": "3.1.10",
-      "resolved": "https://registry.npmjs.org/typegram/-/typegram-3.1.10.tgz",
-      "integrity": "sha512-VfsuVP4uqk9yllRpaGp9yFpzvLKXghFCOSc3TVi+fy1IL2Bi4z2gJ9rMgVSSug4pWQP8Ui7Isvl14yYV8VEWaQ==",
+      "version": "3.2.1",
+      "resolved": "https://registry.npmjs.org/typegram/-/typegram-3.2.1.tgz",
+      "integrity": "sha512-Vq3kOF/UtsSvlS+goKMfRerXi3hGSDanEoB4UztZLvcPkAX9GS0ejYruAb5MpVSZjxX89szxf+2gxrNeZyuhBg==",
       "dev": true
     },
     "typescript": {
diff --git a/package.json b/package.json
index bf60eef..5859fbf 100644
--- a/package.json
+++ b/package.json
@@ -73,7 +73,7 @@
     "prettier": "2.2.1",
     "reflect-metadata": "0.1.13",
     "rxjs": "6.6.6",
-    "telegraf": "4.1.2",
+    "telegraf": "4.2.1",
     "typedoc": "0.20.30",
     "typescript": "4.2.3"
   },
diff --git a/sample/01-complete-app/package-lock.json b/sample/01-complete-app/package-lock.json
index 457dc1f..ebef3d4 100644
--- a/sample/01-complete-app/package-lock.json
+++ b/sample/01-complete-app/package-lock.json
@@ -17,7 +17,7 @@
         "reflect-metadata": "0.1.13",
         "rimraf": "3.0.2",
         "rxjs": "6.6.6",
-        "telegraf": "4.1.2"
+        "telegraf": "4.2.1"
       },
       "devDependencies": {
         "@nestjs/cli": "7.5.6",
@@ -11487,9 +11487,9 @@
       }
     },
     "node_modules/telegraf": {
-      "version": "4.1.2",
-      "resolved": "https://registry.npmjs.org/telegraf/-/telegraf-4.1.2.tgz",
-      "integrity": "sha512-YZljmryOhcZgrRWU28AV7UhZ3y+jKRwPwB49PSDDmW7tKtQHrSLBkW0pCoLniDlQVz+ICBGCWXZlHfqDkQ2iNQ==",
+      "version": "4.2.1",
+      "resolved": "https://registry.npmjs.org/telegraf/-/telegraf-4.2.1.tgz",
+      "integrity": "sha512-tSww8MY+XmT2K3Kq0Y7drGjpl36AQQEg0WWBUByfFcbG6ChiIgOFycPMkB+g5jSL+RqaP7QA4EybAztmI1227g==",
       "dependencies": {
         "abort-controller": "^3.0.0",
         "debug": "^4.3.1",
@@ -11499,7 +11499,7 @@
         "p-timeout": "^4.1.0",
         "safe-compare": "^1.1.4",
         "sandwich-stream": "^2.0.2",
-        "typegram": "^3.1.10"
+        "typegram": "^3.2.0"
       },
       "bin": {
         "telegraf": "bin/telegraf"
@@ -12107,9 +12107,9 @@
       }
     },
     "node_modules/typegram": {
-      "version": "3.1.10",
-      "resolved": "https://registry.npmjs.org/typegram/-/typegram-3.1.10.tgz",
-      "integrity": "sha512-VfsuVP4uqk9yllRpaGp9yFpzvLKXghFCOSc3TVi+fy1IL2Bi4z2gJ9rMgVSSug4pWQP8Ui7Isvl14yYV8VEWaQ=="
+      "version": "3.2.1",
+      "resolved": "https://registry.npmjs.org/typegram/-/typegram-3.2.1.tgz",
+      "integrity": "sha512-Vq3kOF/UtsSvlS+goKMfRerXi3hGSDanEoB4UztZLvcPkAX9GS0ejYruAb5MpVSZjxX89szxf+2gxrNeZyuhBg=="
     },
     "node_modules/typescript": {
       "version": "4.2.3",
@@ -21718,9 +21718,9 @@
       "dev": true
     },
     "telegraf": {
-      "version": "4.1.2",
-      "resolved": "https://registry.npmjs.org/telegraf/-/telegraf-4.1.2.tgz",
-      "integrity": "sha512-YZljmryOhcZgrRWU28AV7UhZ3y+jKRwPwB49PSDDmW7tKtQHrSLBkW0pCoLniDlQVz+ICBGCWXZlHfqDkQ2iNQ==",
+      "version": "4.2.1",
+      "resolved": "https://registry.npmjs.org/telegraf/-/telegraf-4.2.1.tgz",
+      "integrity": "sha512-tSww8MY+XmT2K3Kq0Y7drGjpl36AQQEg0WWBUByfFcbG6ChiIgOFycPMkB+g5jSL+RqaP7QA4EybAztmI1227g==",
       "requires": {
         "abort-controller": "^3.0.0",
         "debug": "^4.3.1",
@@ -21730,7 +21730,7 @@
         "p-timeout": "^4.1.0",
         "safe-compare": "^1.1.4",
         "sandwich-stream": "^2.0.2",
-        "typegram": "^3.1.10"
+        "typegram": "^3.2.0"
       },
       "dependencies": {
         "debug": {
@@ -22175,9 +22175,9 @@
       }
     },
     "typegram": {
-      "version": "3.1.10",
-      "resolved": "https://registry.npmjs.org/typegram/-/typegram-3.1.10.tgz",
-      "integrity": "sha512-VfsuVP4uqk9yllRpaGp9yFpzvLKXghFCOSc3TVi+fy1IL2Bi4z2gJ9rMgVSSug4pWQP8Ui7Isvl14yYV8VEWaQ=="
+      "version": "3.2.1",
+      "resolved": "https://registry.npmjs.org/typegram/-/typegram-3.2.1.tgz",
+      "integrity": "sha512-Vq3kOF/UtsSvlS+goKMfRerXi3hGSDanEoB4UztZLvcPkAX9GS0ejYruAb5MpVSZjxX89szxf+2gxrNeZyuhBg=="
     },
     "typescript": {
       "version": "4.2.3",
diff --git a/sample/01-complete-app/package.json b/sample/01-complete-app/package.json
index fc5ffa1..9c87c6d 100644
--- a/sample/01-complete-app/package.json
+++ b/sample/01-complete-app/package.json
@@ -28,7 +28,7 @@
     "reflect-metadata": "0.1.13",
     "rimraf": "3.0.2",
     "rxjs": "6.6.6",
-    "telegraf": "4.1.2"
+    "telegraf": "4.2.1"
   },
   "devDependencies": {
     "@nestjs/cli": "7.5.6",