diff --git a/.gitignore b/.gitignore
index 361ec26..e1b4df0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,9 +2,11 @@
 *~
 *.swp
 .repo-index
-*.log*
-*.tar*
+*.log
+build.log.round*
+*.tar.*
 *.tgz
+!*.tar.*.*
 *.zip
 commitmsg
 results/
diff --git a/Makefile b/Makefile
index ee4c77c..79485f2 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 PKG_NAME := acrn-hypervisor
-URL = https://github.com/projectacrn/acrn-hypervisor/archive/acrn-2018w22.3-170000p.tar.gz
+URL = https://github.com/projectacrn/acrn-hypervisor/archive/acrn-2018w22.4-163000p.tar.gz
 ARCHIVES = 
 
 include ../common/Makefile.common
diff --git a/acrn-hypervisor.spec b/acrn-hypervisor.spec
index 6d535e0..25a789c 100644
--- a/acrn-hypervisor.spec
+++ b/acrn-hypervisor.spec
@@ -3,10 +3,10 @@
 # Generated by: autospec.py
 #
 Name     : acrn-hypervisor
-Version  : 2018w22.3.170000p
-Release  : 15
-URL      : https://github.com/projectacrn/acrn-hypervisor/archive/acrn-2018w22.3-170000p.tar.gz
-Source0  : https://github.com/projectacrn/acrn-hypervisor/archive/acrn-2018w22.3-170000p.tar.gz
+Version  : 2018w22.4.163000p
+Release  : 16
+URL      : https://github.com/projectacrn/acrn-hypervisor/archive/acrn-2018w22.4-163000p.tar.gz
+Source0  : https://github.com/projectacrn/acrn-hypervisor/archive/acrn-2018w22.4-163000p.tar.gz
 Summary  : No detailed summary available
 Group    : Development/Tools
 License  : BSD-3-Clause CC-BY-4.0
@@ -61,18 +61,18 @@ data components for the acrn-hypervisor package.
 
 
 %prep
-%setup -q -n acrn-hypervisor-acrn-2018w22.3-170000p
+%setup -q -n acrn-hypervisor-acrn-2018w22.4-163000p
 
 %build
 export http_proxy=http://127.0.0.1:9/
 export https_proxy=http://127.0.0.1:9/
 export no_proxy=localhost,127.0.0.1,0.0.0.0
 export LANG=C
-export SOURCE_DATE_EPOCH=1527692039
+export SOURCE_DATE_EPOCH=1527765821
 make  %{?_smp_mflags} all sbl-hypervisor
 
 %install
-export SOURCE_DATE_EPOCH=1527692039
+export SOURCE_DATE_EPOCH=1527765821
 rm -rf %{buildroot}
 %make_install install sbl-hypervisor-install
 
diff --git a/options.conf b/options.conf
index 009c48a..aa01887 100644
--- a/options.conf
+++ b/options.conf
@@ -1,6 +1,6 @@
 [package]
 name = acrn-hypervisor
-url = https://github.com/projectacrn/acrn-hypervisor/archive/acrn-2018w22.3-170000p.tar.gz
+url = https://github.com/projectacrn/acrn-hypervisor/archive/acrn-2018w22.4-163000p.tar.gz
 archives = 
 giturl = 
 
diff --git a/release b/release
index 60d3b2f..b6a7d89 100644
--- a/release
+++ b/release
@@ -1 +1 @@
-15
+16
diff --git a/upstream b/upstream
index 1ef89af..05806b4 100644
--- a/upstream
+++ b/upstream
@@ -1 +1 @@
-87edab3760e1ae526eb5ca269f53e7ef458097a9/acrn-2018w22.3-170000p.tar.gz
+d8bc74789b878e457867c50c760ebf6cd6df2af6/acrn-2018w22.4-163000p.tar.gz