diff --git a/Telegram/Telegram-iOS/en.lproj/Localizable.strings b/Telegram/Telegram-iOS/en.lproj/Localizable.strings
index ff8601fae5..9f6cbd776e 100644
--- a/Telegram/Telegram-iOS/en.lproj/Localizable.strings
+++ b/Telegram/Telegram-iOS/en.lproj/Localizable.strings
@@ -9343,3 +9343,5 @@ Sorry for the inconvenience.";
 
 "ChatList.PremiumRestoreDiscountTitle" = "Get Premium back with up to %@ off";
 "ChatList.PremiumRestoreDiscountText" = "Your Telegram Premium has recently expired. Tap here to extend it.";
+
+"Login.ErrorAppOutdated" = "Please update Telegram to the latest version to log in.";
diff --git a/submodules/AuthorizationUI/Sources/AuthorizationSequenceController.swift b/submodules/AuthorizationUI/Sources/AuthorizationSequenceController.swift
index 6b4edc58d2..56a04d915d 100644
--- a/submodules/AuthorizationUI/Sources/AuthorizationSequenceController.swift
+++ b/submodules/AuthorizationUI/Sources/AuthorizationSequenceController.swift
@@ -221,6 +221,13 @@ public final class AuthorizationSequenceController: NavigationController, MFMail
                                     case .phoneLimitExceeded:
                                         text = strongSelf.presentationData.strings.Login_PhoneFloodError
                                         actions.append(TextAlertAction(type: .defaultAction, title: strongSelf.presentationData.strings.Common_OK, action: {}))
+                                    case .appOutdated:
+                                        text = strongSelf.presentationData.strings.Login_ErrorAppOutdated
+                                        let updateUrl = strongSelf.presentationData.strings.InviteText_URL
+                                        let sharedContext = strongSelf.sharedContext
+                                        actions.append(TextAlertAction(type: .defaultAction, title: strongSelf.presentationData.strings.Common_OK, action: {
+                                            sharedContext.applicationBindings.openUrl(updateUrl)
+                                        }))
                                     case .phoneBanned:
                                         text = strongSelf.presentationData.strings.Login_PhoneBannedError
                                         actions.append(TextAlertAction(type: .genericAction, title: strongSelf.presentationData.strings.Common_OK, action: {}))
@@ -581,6 +588,8 @@ public final class AuthorizationSequenceController: NavigationController, MFMail
                         if let strongSelf = self, let controller = controller {
                             controller.inProgress = false
                             
+                            var actions: [TextAlertAction] = [TextAlertAction(type: .defaultAction, title: strongSelf.presentationData.strings.Common_OK, action: {})]
+                            
                             let text: String
                             switch error {
                                 case .limitExceeded:
@@ -589,6 +598,13 @@ public final class AuthorizationSequenceController: NavigationController, MFMail
                                     text = strongSelf.presentationData.strings.Login_InvalidPhoneError
                                 case .phoneLimitExceeded:
                                     text = strongSelf.presentationData.strings.Login_PhoneFloodError
+                                case .appOutdated:
+                                    text = strongSelf.presentationData.strings.Login_ErrorAppOutdated
+                                    let updateUrl = strongSelf.presentationData.strings.InviteText_URL
+                                    let sharedContext = strongSelf.sharedContext
+                                    actions = [TextAlertAction(type: .defaultAction, title: strongSelf.presentationData.strings.Common_OK, action: {
+                                        sharedContext.applicationBindings.openUrl(updateUrl)
+                                    })]
                                 case .phoneBanned:
                                     text = strongSelf.presentationData.strings.Login_PhoneBannedError
                                 case .generic:
@@ -597,7 +613,7 @@ public final class AuthorizationSequenceController: NavigationController, MFMail
                                     text = strongSelf.presentationData.strings.Login_NetworkError
                             }
                             
-                            controller.present(standardTextAlertController(theme: AlertControllerTheme(presentationData: strongSelf.presentationData), title: nil, text: text, actions: [TextAlertAction(type: .defaultAction, title: strongSelf.presentationData.strings.Common_OK, action: {})]), in: .window(.root))
+                            controller.present(standardTextAlertController(theme: AlertControllerTheme(presentationData: strongSelf.presentationData), title: nil, text: text, actions: actions), in: .window(.root))
                         }
                     }))
                 }
diff --git a/submodules/TelegramCore/Sources/Authorization.swift b/submodules/TelegramCore/Sources/Authorization.swift
index 9fda6280b6..8dc3891e26 100644
--- a/submodules/TelegramCore/Sources/Authorization.swift
+++ b/submodules/TelegramCore/Sources/Authorization.swift
@@ -12,6 +12,7 @@ public enum AuthorizationCodeRequestError {
     case phoneLimitExceeded
     case phoneBanned
     case timeout
+    case appOutdated
 }
 
 func switchToAuthorizedAccount(transaction: AccountManagerModifier<TelegramAccountManagerTypes>, account: UnauthorizedAccount) {
@@ -230,6 +231,8 @@ public func sendAuthorizationCode(accountManager: AccountManager<TelegramAccount
                 return .fail(.phoneLimitExceeded)
             } else if error.errorDescription == "PHONE_NUMBER_BANNED" {
                 return .fail(.phoneBanned)
+            } else if error.errorDescription == "UPDATE_APP_TO_LOGIN" {
+                return .fail(.appOutdated)
             } else if error.errorDescription == "SESSION_PASSWORD_NEEDED" {
                 return account.network.request(Api.functions.account.getPassword(), automaticFloodWait: false)
                 |> mapError { error -> AuthorizationCodeRequestError in
@@ -356,6 +359,8 @@ private func internalResendAuthorizationCode(accountManager: AccountManager<Tele
             return .phoneLimitExceeded
         } else if error.errorDescription == "PHONE_NUMBER_BANNED" {
             return .phoneBanned
+        } else if error.errorDescription == "UPDATE_APP_TO_LOGIN" {
+            return .appOutdated
         } else {
             return .generic(info: (Int(error.errorCode), error.errorDescription))
         }
@@ -442,6 +447,8 @@ public func resendAuthorizationCode(accountManager: AccountManager<TelegramAccou
                                 return .phoneLimitExceeded
                             } else if error.errorDescription == "PHONE_NUMBER_BANNED" {
                                 return .phoneBanned
+                            } else if error.errorDescription == "UPDATE_APP_TO_LOGIN" {
+                                return .appOutdated
                             } else {
                                 return .generic(info: (Int(error.errorCode), error.errorDescription))
                             }