diff --git a/examples/awslambdaechobot/README.md b/examples/awslambdaechobot/README.md
deleted file mode 100644
index f38ea8d..0000000
--- a/examples/awslambdaechobot/README.md
+++ /dev/null
@@ -1,23 +0,0 @@
-This example shows how to write an echo telebot for AWS Lambda and how to launch it using Terraform.
-
-This bot is different from a typical bot in two ways:
-
-1. It is configured with `Settings.Synchronous = true`. This disables asynchronous handlers to let Lambda wait for their completion:
-
-    ```go
-    b, _ := tele.NewBot(tele.Settings{Token: token, Synchronous: true})
-    ```
-
-2. Instead of `Settings.Poller` and `bot.Start` it calls `bot.ProcessUpdate` inside `lambda.Start`:
-
-    ```go
-    lambda.Start(func(req events.APIGatewayProxyRequest) (err error) {
-        var u tele.Update
-        if err = json.Unmarshal([]byte(req.Body), &u); err == nil {
-            b.ProcessUpdate(u)
-        }
-        return
-    })
-    ```
-
-To launch the bot [install Terraform](https://www.terraform.io/downloads.html), run [`./init.sh`](init.sh) and then [`./deploy.sh`](deploy.sh). To tear down the cloud infrastructure run `terraform destroy`.
diff --git a/examples/awslambdaechobot/deploy.sh b/examples/awslambdaechobot/deploy.sh
deleted file mode 100755
index 59b0a72..0000000
--- a/examples/awslambdaechobot/deploy.sh
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/bin/sh
-set -ex
-cd "$(dirname "$0")"
-CGO_ENABLED=0 go build -ldflags="-s -w" -v
-terraform apply "$@"
diff --git a/examples/awslambdaechobot/go.mod b/examples/awslambdaechobot/go.mod
deleted file mode 100644
index f5218c1..0000000
--- a/examples/awslambdaechobot/go.mod
+++ /dev/null
@@ -1,8 +0,0 @@
-module github.com/tucnak/telebot/examples/awslambdaechobot
-
-go 1.14
-
-require (
-	github.com/aws/aws-lambda-go v1.17.0
-	gopkg.in/tucnak/telebot.v2 v2.3.1
-)
diff --git a/examples/awslambdaechobot/go.sum b/examples/awslambdaechobot/go.sum
deleted file mode 100644
index 800a8b3..0000000
--- a/examples/awslambdaechobot/go.sum
+++ /dev/null
@@ -1,23 +0,0 @@
-github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/aws/aws-lambda-go v1.17.0 h1:Ogihmi8BnpmCNktKAGpNwSiILNNING1MiosnKUfU8m0=
-github.com/aws/aws-lambda-go v1.17.0/go.mod h1:FEwgPLE6+8wcGBTe5cJN3JWurd1Ztm9zN4jsXsjzKKw=
-github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
-github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
-github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
-github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
-github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
-github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
-github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
-github.com/stretchr/testify v1.5.1 h1:nOGnQDM7FYENwehXlg/kFVnos3rEvtKTjRvOWSzb6H4=
-github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
-github.com/urfave/cli/v2 v2.1.1/go.mod h1:SE9GqnLQmjVa0iPEY0f1w3ygNIYcIJ0OKPMoW2caLfQ=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/tucnak/telebot.v2 v2.3.1 h1:ux26aeidIT1RcqOiTjZtNEdAgXoohc/CKM6imBSkzbw=
-gopkg.in/tucnak/telebot.v2 v2.3.1/go.mod h1:t+KVAiqFsG9ZDF0hz1ZPFTyENtlrDrDS3qmRRqhICBg=
-gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
-gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
diff --git a/examples/awslambdaechobot/init.sh b/examples/awslambdaechobot/init.sh
deleted file mode 100755
index e062a4d..0000000
--- a/examples/awslambdaechobot/init.sh
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/bin/sh
-set -ex
-cd "$(dirname "$0")"
-GOBIN=$HOME/.terraform.d/plugins GO111MODULE=on go get github.com/yi-jiayu/terraform-provider-telegram
-terraform init
diff --git a/examples/awslambdaechobot/main.go b/examples/awslambdaechobot/main.go
deleted file mode 100644
index c1d5886..0000000
--- a/examples/awslambdaechobot/main.go
+++ /dev/null
@@ -1,30 +0,0 @@
-package main
-
-import (
-	"encoding/json"
-	"os"
-
-	"github.com/aws/aws-lambda-go/events"
-	"github.com/aws/aws-lambda-go/lambda"
-	tb "gopkg.in/tucnak/telebot.v2"
-)
-
-func main() {
-	b, err := tele.NewBot(tele.Settings{
-		Token:       os.Getenv("TELEBOT_SECRET"),
-		Synchronous: true,
-	})
-	if err != nil {
-		panic(err)
-	}
-
-	b.Handle(tele.OnText, func(m *tele.Message) { b.Send(m.Chat, m.Text) })
-
-	lambda.Start(func(req events.APIGatewayProxyRequest) (err error) {
-		var u tele.Update
-		if err = json.Unmarshal([]byte(req.Body), &u); err == nil {
-			b.ProcessUpdate(u)
-		}
-		return
-	})
-}
diff --git a/examples/awslambdaechobot/main.tf b/examples/awslambdaechobot/main.tf
deleted file mode 100644
index 5de7ba7..0000000
--- a/examples/awslambdaechobot/main.tf
+++ /dev/null
@@ -1,114 +0,0 @@
-variable "name" {
-  type        = string
-  default     = "awslambdaechobot" # basename(path.root)
-  description = "Name of the binary (basename of this directory)"
-}
-variable "token" {
-  type        = string
-  description = "Telegram bot token"
-}
-variable "region" {
-  type        = string
-  description = "AWS deployment region"
-}
-
-locals {
-  exe      = var.name
-  zip      = "${local.exe}.zip"
-  func     = "${var.name}Function"
-  api      = "${var.name}API"
-  role     = "${var.name}Role"
-  policy   = "${var.name}Policy"
-  perm     = "${var.name}Permission"
-  log      = "/aws/lambda/${local.func}"
-  envToken = "TELEBOT_SECRET"
-}
-
-# Run ./init.sh to install github.com/yi-jiayu/terraform-provider-telegram
-provider "telegram" {
-  bot_token = var.token
-}
-resource "telegram_bot_webhook" "a" {
-  url             = aws_apigatewayv2_api.a.api_endpoint
-  max_connections = 100
-}
-
-provider "archive" {
-  version = "~> 1.3"
-}
-data "archive_file" "a" {
-  type        = "zip"
-  source_file = local.exe
-  output_path = local.zip
-}
-
-provider "aws" {
-  version = "~> 2.59"
-  region  = var.region
-}
-
-resource "aws_apigatewayv2_api" "a" {
-  name          = local.api
-  protocol_type = "HTTP"
-  target        = aws_lambda_function.a.arn
-  route_key     = "POST /"
-}
-resource "aws_lambda_permission" "a" {
-  statement_id  = local.perm
-  function_name = aws_lambda_function.a.function_name
-  action        = "lambda:InvokeFunction"
-  principal     = "apigateway.amazonaws.com"
-  source_arn    = "${aws_apigatewayv2_api.a.execution_arn}/*/*/*" # Any stage, method, resource.
-}
-
-resource "aws_lambda_function" "a" {
-  function_name = local.func
-  runtime       = "go1.x"
-  handler       = local.exe
-  memory_size   = 128 # MB, 128 + 64*x
-  timeout       = 60  # seconds
-  role          = aws_iam_role.a.arn
-
-  filename         = data.archive_file.a.output_path
-  source_code_hash = data.archive_file.a.output_base64sha256
-
-  environment {
-    variables = {
-      (local.envToken) = var.token
-    }
-  }
-}
-resource "aws_cloudwatch_log_group" "a" {
-  # AWS Lambda automatically logs to the group with this name.
-  name              = local.log
-  retention_in_days = 1
-}
-
-resource "aws_iam_role_policy_attachment" "a" {
-  role       = aws_iam_role.a.name
-  policy_arn = aws_iam_policy.a.arn
-}
-resource "aws_iam_role" "a" {
-  name               = local.role
-  assume_role_policy = data.aws_iam_policy_document.assume_role_policy.json
-}
-data "aws_iam_policy_document" "assume_role_policy" {
-  statement {
-    actions = ["sts:AssumeRole"]
-    principals {
-      type        = "Service"
-      identifiers = ["lambda.amazonaws.com"]
-    }
-  }
-}
-resource "aws_iam_policy" "a" {
-  name   = local.policy
-  policy = data.aws_iam_policy_document.a.json
-}
-data "aws_iam_policy_document" "a" {
-  # Based on AWSLambdaBasicExecutionRole.
-  statement {
-    actions   = ["logs:CreateLogStream", "logs:PutLogEvents"]
-    resources = [aws_cloudwatch_log_group.a.arn]
-  }
-}