diff --git a/package-lock.json b/package-lock.json
index 1d372f2..cde52fb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -43,11 +43,22 @@
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     "node_modules/node-fetch": {
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-      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.3.0.tgz",
-      "integrity": "sha512-MOd8pV3fxENbryESLgVIeaGKrdl+uaYhCSSVkjeOb/31/njTpcis5aWfdqgNlHIrKOLRbMnfPINPOML2CIFeXA==",
+      "version": "2.6.7",
+      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.7.tgz",
+      "integrity": "sha512-ZjMPFEfVx5j+y2yF35Kzx5sF7kDzxuDj6ziH4FFbOp87zKDZNx8yExJIb05OGF4Nlt9IHFIMBkRl41VdvcNdbQ==",
+      "dependencies": {
+        "whatwg-url": "^5.0.0"
+      },
       "engines": {
         "node": "4.x || >=6.0.0"
+      },
+      "peerDependencies": {
+        "encoding": "^0.1.0"
+      },
+      "peerDependenciesMeta": {
+        "encoding": {
+          "optional": true
+        }
       }
     },
     "node_modules/sandwich-stream": {
@@ -77,6 +88,25 @@
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+    },
+    "node_modules/tr46": {
+      "version": "0.0.3",
+      "resolved": "https://registry.npmjs.org/tr46/-/tr46-0.0.3.tgz",
+      "integrity": "sha512-N3WMsuqV66lT30CrXNbEjx4GEwlow3v6rr4mCcv6prnfwhS01rkgyFdjPNBYd9br7LpXV1+Emh01fHnq2Gdgrw=="
+    },
+    "node_modules/webidl-conversions": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-3.0.1.tgz",
+      "integrity": "sha512-2JAn3z8AR6rjK8Sm8orRC0h/bcl/DqL7tRPdGZ4I1CjdF+EaMLmYxBHyXuKL849eucPFhvBoxMsflfOb8kxaeQ=="
+    },
+    "node_modules/whatwg-url": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-5.0.0.tgz",
+      "integrity": "sha512-saE57nupxk6v3HY35+jzBwYa0rKSy0XR8JSxZPwgLr7ys0IBzhGviA1/TUGJLmSVqs8pb9AnvICXEuOHLprYTw==",
+      "dependencies": {
+        "tr46": "~0.0.3",
+        "webidl-conversions": "^3.0.0"
+      }
     }
   },
   "dependencies": {
@@ -109,9 +139,12 @@
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     },
     "node-fetch": {
-      "version": "2.3.0",
-      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.3.0.tgz",
-      "integrity": "sha512-MOd8pV3fxENbryESLgVIeaGKrdl+uaYhCSSVkjeOb/31/njTpcis5aWfdqgNlHIrKOLRbMnfPINPOML2CIFeXA=="
+      "version": "2.6.7",
+      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.7.tgz",
+      "integrity": "sha512-ZjMPFEfVx5j+y2yF35Kzx5sF7kDzxuDj6ziH4FFbOp87zKDZNx8yExJIb05OGF4Nlt9IHFIMBkRl41VdvcNdbQ==",
+      "requires": {
+        "whatwg-url": "^5.0.0"
+      }
     },
     "sandwich-stream": {
       "version": "2.0.2",
@@ -134,6 +167,25 @@
       "version": "3.6.1",
       "resolved": "https://registry.npmjs.org/telegram-typings/-/telegram-typings-3.6.1.tgz",
       "integrity": "sha512-njVv1EAhIZnmQVLocZEADYUyqA1WIXuVcDYlsp+mXua/XB0pxx+PKtMSPeZ/EE4wPWTw9h/hA9ASTT6yQelkiw=="
+    },
+    "tr46": {
+      "version": "0.0.3",
+      "resolved": "https://registry.npmjs.org/tr46/-/tr46-0.0.3.tgz",
+      "integrity": "sha512-N3WMsuqV66lT30CrXNbEjx4GEwlow3v6rr4mCcv6prnfwhS01rkgyFdjPNBYd9br7LpXV1+Emh01fHnq2Gdgrw=="
+    },
+    "webidl-conversions": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-3.0.1.tgz",
+      "integrity": "sha512-2JAn3z8AR6rjK8Sm8orRC0h/bcl/DqL7tRPdGZ4I1CjdF+EaMLmYxBHyXuKL849eucPFhvBoxMsflfOb8kxaeQ=="
+    },
+    "whatwg-url": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-5.0.0.tgz",
+      "integrity": "sha512-saE57nupxk6v3HY35+jzBwYa0rKSy0XR8JSxZPwgLr7ys0IBzhGviA1/TUGJLmSVqs8pb9AnvICXEuOHLprYTw==",
+      "requires": {
+        "tr46": "~0.0.3",
+        "webidl-conversions": "^3.0.0"
+      }
     }
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 5a6b56e..c6df0d9 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3,54 +3,62 @@
 
 
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-  "resolved" "https://registry.npmjs.org/@types/node/-/node-10.12.7.tgz"
-  "version" "10.12.7"
-
-"debug@^4.0.1":
-  "integrity" "sha512-heNPJUJIqC+xB6ayLAMHaIrmN9HKa7aQO8MGqKpvCA+uJYVcvR6l5kgdrhRuwPFHU7P5/A1w0BjByPHwpfTDKg=="
-  "resolved" "https://registry.npmjs.org/debug/-/debug-4.1.0.tgz"
-  "version" "4.1.0"
+  version "10.12.7"
+  resolved "https://registry.npmjs.org/@types/node/-/node-10.12.7.tgz"
+
+debug@^4.0.1:
+  version "4.1.0"
+  resolved "https://registry.npmjs.org/debug/-/debug-4.1.0.tgz"
   dependencies:
-    "ms" "^2.1.1"
-
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-  "resolved" "https://registry.npmjs.org/dotenv/-/dotenv-8.2.0.tgz"
-  "version" "8.2.0"
-
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-  "integrity" "sha512-bzh50DW9kTPM00T8y4o8vQg89Di9oLJVLW/KaOGIXJWP/iqCN6WKYkbNOF04vFLJhwcpYUh9ydh/+5vpOqV4YQ=="
-  "resolved" "https://registry.npmjs.org/grapheme-splitter/-/grapheme-splitter-1.0.4.tgz"
-  "version" "1.0.4"
-
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-  "resolved" "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz"
-  "version" "2.1.1"
-
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-  "resolved" "https://registry.npmjs.org/node-fetch/-/node-fetch-2.3.0.tgz"
-  "version" "2.3.0"
-
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-  "integrity" "sha512-jLYV0DORrzY3xaz/S9ydJL6Iz7essZeAfnAavsJ+zsJGZ1MOnsS52yRjU3uF3pJa/lla7+wisp//fxOwOH8SKQ=="
-  "resolved" "https://registry.npmjs.org/sandwich-stream/-/sandwich-stream-2.0.2.tgz"
-  "version" "2.0.2"
-
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-  "integrity" "sha512-W2L/9LIOndtzqgEnJPlDJS8Q/gwoRS/a7FvoV9kPhKwRWtJtiP8xhkr66GMbOhnB0RgSK6GMrgeZtXNzLn/bQg=="
-  "resolved" "https://registry.npmjs.org/telegraf/-/telegraf-3.25.0.tgz"
-  "version" "3.25.0"
+    ms "^2.1.1"
+
+dotenv@^8.2.0:
+  version "8.2.0"
+  resolved "https://registry.npmjs.org/dotenv/-/dotenv-8.2.0.tgz"
+
+grapheme-splitter@^1.0.4:
+  version "1.0.4"
+  resolved "https://registry.npmjs.org/grapheme-splitter/-/grapheme-splitter-1.0.4.tgz"
+
+ms@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz"
+
+node-fetch@^2.2.0:
+  version "2.6.7"
+  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.7.tgz#24de9fba827e3b4ae44dc8b20256a379160052ad"
+  dependencies:
+    whatwg-url "^5.0.0"
+
+sandwich-stream@^2.0.1:
+  version "2.0.2"
+  resolved "https://registry.npmjs.org/sandwich-stream/-/sandwich-stream-2.0.2.tgz"
+
+telegraf@^3.25.0:
+  version "3.25.0"
+  resolved "https://registry.npmjs.org/telegraf/-/telegraf-3.25.0.tgz"
   dependencies:
     "@types/node" "^10.1.2"
-    "debug" "^4.0.1"
-    "node-fetch" "^2.2.0"
-    "sandwich-stream" "^2.0.1"
-    "telegram-typings" "^3.6.0"
-
-"telegram-typings@^3.6.0":
-  "integrity" "sha512-njVv1EAhIZnmQVLocZEADYUyqA1WIXuVcDYlsp+mXua/XB0pxx+PKtMSPeZ/EE4wPWTw9h/hA9ASTT6yQelkiw=="
-  "resolved" "https://registry.npmjs.org/telegram-typings/-/telegram-typings-3.6.1.tgz"
-  "version" "3.6.1"
+    debug "^4.0.1"
+    node-fetch "^2.2.0"
+    sandwich-stream "^2.0.1"
+    telegram-typings "^3.6.0"
+
+telegram-typings@^3.6.0:
+  version "3.6.1"
+  resolved "https://registry.npmjs.org/telegram-typings/-/telegram-typings-3.6.1.tgz"
+
+tr46@~0.0.3:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/tr46/-/tr46-0.0.3.tgz#8184fd347dac9cdc185992f3a6622e14b9d9ab6a"
+
+webidl-conversions@^3.0.0:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-3.0.1.tgz#24534275e2a7bc6be7bc86611cc16ae0a5654871"
+
+whatwg-url@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/whatwg-url/-/whatwg-url-5.0.0.tgz#966454e8765462e37644d3626f6742ce8b70965d"
+  dependencies:
+    tr46 "~0.0.3"
+    webidl-conversions "^3.0.0"