diff --git a/CHANGELOG.md b/CHANGELOG.md
index dee077c..0e0e606 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 ## [Unreleased]
 
+## 4.0.1 (2019-02-26)
+
+### Arreglado
+
+- Saludos a nuevos (ex)miembros
+
 ## 4.0.0 (2019-02-23)
 
 ### Agregado
diff --git a/package-lock.json b/package-lock.json
index c16576c..29fe148 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -243,9 +243,9 @@
       }
     },
     "ajv": {
-      "version": "6.8.1",
-      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.8.1.tgz",
-      "integrity": "sha512-eqxCp82P+JfqL683wwsL73XmFs1eG6qjw+RD3YHx+Jll1r0jNd4dh8QG9NYAeNGA/hnZjeEDgtTskgJULbxpWQ==",
+      "version": "6.9.2",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.9.2.tgz",
+      "integrity": "sha512-4UFy0/LgDo7Oa/+wOAlj44tp9K78u38E5/359eSrqEp1Z5PdVfimCcs7SluXMP755RUQu6d2b4AvF0R1C9RZjg==",
       "requires": {
         "fast-deep-equal": "^2.0.1",
         "fast-json-stable-stringify": "^2.0.0",
@@ -2986,6 +2986,37 @@
       "dev": true,
       "requires": {
         "chalk": "^2.0.1"
+      },
+      "dependencies": {
+        "ansi-styles": {
+          "version": "3.2.1",
+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
+          "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
+          "dev": true,
+          "requires": {
+            "color-convert": "^1.9.0"
+          }
+        },
+        "chalk": {
+          "version": "2.4.2",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz",
+          "integrity": "sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==",
+          "dev": true,
+          "requires": {
+            "ansi-styles": "^3.2.1",
+            "escape-string-regexp": "^1.0.5",
+            "supports-color": "^5.3.0"
+          }
+        },
+        "supports-color": {
+          "version": "5.5.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
+          "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
+          "dev": true,
+          "requires": {
+            "has-flag": "^3.0.0"
+          }
+        }
       }
     },
     "log-update": {
diff --git a/src/listen-commands/admin/index.js b/src/listen-commands/admin/index.js
index 25bc95e..dfd2ab6 100644
--- a/src/listen-commands/admin/index.js
+++ b/src/listen-commands/admin/index.js
@@ -4,8 +4,12 @@ const { forwardMessage } = require('bot-api-overrides');
 const verifyUrls = async (bot, msg) => {
   const chatId = msg.chat.id;
   const chatInfo = await bot.getChat(chatId);
+  const {
+    type,
+    all_members_are_administrators: allMembersAreAdministrators,
+  } = chatInfo;
 
-  if (chatInfo.type === 'group') {
+  if (['group', 'supergroup'].includes(type) && !allMembersAreAdministrators) {
     const urlEntities = msg.entities
       ? msg.entities.filter(entity => entity.type === 'url')
       : [];
diff --git a/src/listen-commands/github/index.js b/src/listen-commands/github/index.js
index 2c46df3..2d2d0c9 100644
--- a/src/listen-commands/github/index.js
+++ b/src/listen-commands/github/index.js
@@ -73,7 +73,7 @@ const verifyCode = async (bot, msg) => {
   const chatId = msg.chat.id;
   const chatInfo = await bot.getChat(chatId);
 
-  if (chatInfo.type === 'group') {
+  if (['supergroup', 'group'].includes(chatInfo.type)) {
     if (!Object.prototype.hasOwnProperty.call(msg, 'entities')) {
       return;
     }
diff --git a/src/listen-commands/greetings/index.js b/src/listen-commands/greetings/index.js
index 5858a5c..3469063 100644
--- a/src/listen-commands/greetings/index.js
+++ b/src/listen-commands/greetings/index.js
@@ -18,7 +18,11 @@ const formatName = (firstName, userName) =>
 const sayHello = async (bot, msg) => {
   const chatId = msg.chat.id;
   const chatInfo = await bot.getChat(chatId);
-  if (chatInfo.type === 'group') {
+  const {
+    type,
+    all_members_are_administrators: allMembersAreAdministrators,
+  } = chatInfo;
+  if (['supergroup', 'group'].includes(type) && !allMembersAreAdministrators) {
     msg.new_chat_members.forEach(({ first_name, username }) => {
       const message = welcome.replace(
         '#{name}',
@@ -41,7 +45,11 @@ const sayGoodbye = async (bot, msg) => {
   const chatId = msg.chat.id;
   const chatInfo = await bot.getChat(chatId);
   const { first_name: firstName, username } = msg.left_chat_member;
-  if (chatInfo.type === 'group') {
+  const {
+    type,
+    all_members_are_administrators: allMembersAreAdministrators,
+  } = chatInfo;
+  if (['supergroup', 'group'].includes(type) && !allMembersAreAdministrators) {
     sendMessage(
       bot,
       msg.chat.id,