diff --git a/CHANGELOG b/CHANGELOG
index 8ba6aad..8cb3185 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,6 @@
+Ver.1.8.1:
+* change pkg update time to hour
+
 Ver.1.8.0:
 + added scrollbar to configuration interface
 + added AC lines configuration
diff --git a/CHANGELOG-RU b/CHANGELOG-RU
index 7aa9738..21c7089 100644
--- a/CHANGELOG-RU
+++ b/CHANGELOG-RU
@@ -1,3 +1,6 @@
+Вер.1.8.1:
+* поле pkg теперь обновляется раз в час
+
 Вер.1.8.0:
 + добавлены скроллбары в конфигурационный интерфейс
 + добавлена настройка значений AC
diff --git a/PKGBUILD b/PKGBUILD
index d194b1e..23e5778 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -2,7 +2,7 @@
 
 pkgname=kdeplasma-applets-pytextmonitor
 _pkgname=pytextmonitor
-pkgver=1.8.0
+pkgver=1.8.1
 pkgrel=1
 pkgdesc="Minimalistic Plasmoid script written on Python2. It looks like widgets in Awesome WM"
 arch=('i686' 'x86_64')
@@ -20,7 +20,7 @@ optdepends=("amarok: for music player monitor"
 makedepends=('automoc4' 'cmake')
 source=(https://github.com/arcan1s/pytextmonitor/releases/download/V.${pkgver}/${_pkgname}-${pkgver}-src.tar.xz)
 install=${pkgname}.install
-md5sums=('9052985dc219e75ffbed88ce3ebf5a32')
+md5sums=('de872b28c48b9b4903dcfa50158595dc')
 backup=('usr/share/config/extsysmon.conf')
 
 prepare() {
diff --git a/sources/CMakeLists.txt b/sources/CMakeLists.txt
index 0e7c6ad..cb30007 100644
--- a/sources/CMakeLists.txt
+++ b/sources/CMakeLists.txt
@@ -8,7 +8,7 @@ cmake_policy (SET CMP0015 NEW)
 project (pytextmonitor)
 set (PROJECT_VERSION_MAJOR 1)
 set (PROJECT_VERSION_MINOR 8)
-set (PROJECT_VERSION_PATCH 0)
+set (PROJECT_VERSION_PATCH 1)
 set (PROJECT_VERSION ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH})
 
 message (STATUS "Version: ${PROJECT_VERSION}")
diff --git a/sources/ptm/contents/code/dataengine.py b/sources/ptm/contents/code/dataengine.py
index 1209782..fa3cf6b 100644
--- a/sources/ptm/contents/code/dataengine.py
+++ b/sources/ptm/contents/code/dataengine.py
@@ -19,6 +19,7 @@
 
 from PyQt4.QtCore import *
 from PyQt4.QtGui import *
+from PyKDE4.plasma import Plasma
 
 import datetime
 
@@ -65,7 +66,7 @@ class DataEngine:
             dataEngines['system'].connectSource("network/interfaces/" + names['net'] + "/transmitter/data", self.parent, interval)
             dataEngines['system'].connectSource("network/interfaces/" + names['net'] + "/receiver/data", self.parent, interval)
         if (bools['pkg'] > 0):
-            dataEngines['ext'].connectSource("pkg", self.parent, interval)
+            dataEngines['ext'].connectSource("pkg", self.parent, 60*60*1000, Plasma.AlignToHour)
         if (bools['player'] > 0):
             dataEngines['ext'].connectSource("player", self.parent, interval)
         if (bools['ps'] > 0):