diff --git a/Dockerfile b/Dockerfile
index ee5c816..740800f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.5-slim
+FROM python:3.6-slim
 MAINTAINER The MyBook Developers <dev@mybook.ru>
 
 RUN groupadd zabbix_exporter && useradd --no-create-home --gid zabbix_exporter zabbix_exporter
diff --git a/setup.py b/setup.py
index 37ca1ee..df3b6c5 100755
--- a/setup.py
+++ b/setup.py
@@ -14,10 +14,11 @@
     history = history_file.read()
 
 requirements = [
-    'prometheus-client>=0.0.13',
+    'prometheus-client==0.1.0',
     'pyzabbix>=0.7.4',
     'PyYAML>=3.11',
     'click>=6.4',
+    'raven>=6.9.0',
 ]
 
 test_requirements = [
diff --git a/tox.ini b/tox.ini
index dc01080..45b1cda 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py27, py35, py36, pypy
+envlist = py35, py36
 skipsdist = true
 
 [testenv]
diff --git a/zabbix_exporter/commands.py b/zabbix_exporter/commands.py
index c120813..38fcec8 100644
--- a/zabbix_exporter/commands.py
+++ b/zabbix_exporter/commands.py
@@ -1,10 +1,12 @@
 # coding: utf-8
 import logging
+import sys
 
 import click
-import sys
 import yaml
 from prometheus_client import REGISTRY
+from raven import Client, setup_logging
+from raven.handlers.logging import SentryHandler
 
 import zabbix_exporter
 from zabbix_exporter.core import ZabbixCollector, MetricsHandler
@@ -38,6 +40,7 @@ def validate_settings(settings):
 @click.option('--verbose', is_flag=True)
 @click.option('--dump-metrics', help='Output all metrics for human to write yaml config', is_flag=True)
 @click.option('--version', is_flag=True)
+@click.option('--sentry', help='Sentry DSN')
 @click.option('--return-server', is_flag=True, help='Developer flag. Please ignore.')
 def cli(**settings):
     """Zabbix metrics exporter for Prometheus
@@ -97,6 +100,12 @@ def cli(**settings):
     if settings['dump_metrics']:
         return dump_metrics(collector)
 
+    if settings['sentry']:
+        reaven_client = Client(settings['sentry'])
+        handler = SentryHandler(reaven_client)
+        handler.setLevel(logging.ERROR)
+        setup_logging(handler)
+
     REGISTRY.register(collector)
     httpd = HTTPServer(('', int(settings['port'])), MetricsHandler)
     click.echo('Exporter for {base_url}, user: {login}, password: ***'.format(
diff --git a/zabbix_exporter/core.py b/zabbix_exporter/core.py
index 851fdd6..c1a4aef 100644
--- a/zabbix_exporter/core.py
+++ b/zabbix_exporter/core.py
@@ -147,7 +147,7 @@ def do_GET(self):
             response = generate_latest(REGISTRY) + generate_latest(exporter_registry)
             status = 200
         except Exception:
-            logger.exception('Fetch failed')
+            logger.error('Fetch failed', exc_info=True)
             response = ''
             status = 500
         self.send_response(status)