diff --git a/Makefile b/Makefile
index 791f73b..28ef730 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 PKG_NAME := acrn-hypervisor
-URL = https://github.com/projectacrn/acrn-hypervisor/archive/v0.1-rc2.tar.gz
+URL = https://github.com/projectacrn/acrn-hypervisor/archive/v0.1-rc4.tar.gz
 ARCHIVES = 
 
 include ../common/Makefile.common
diff --git a/acrn-hypervisor.spec b/acrn-hypervisor.spec
index 7273de2..2002f0e 100644
--- a/acrn-hypervisor.spec
+++ b/acrn-hypervisor.spec
@@ -3,10 +3,10 @@
 # Generated by: autospec.py
 #
 Name     : acrn-hypervisor
-Version  : 0.1.rc2
-Release  : 5
-URL      : https://github.com/projectacrn/acrn-hypervisor/archive/v0.1-rc2.tar.gz
-Source0  : https://github.com/projectacrn/acrn-hypervisor/archive/v0.1-rc2.tar.gz
+Version  : 0.1.rc4
+Release  : 6
+URL      : https://github.com/projectacrn/acrn-hypervisor/archive/v0.1-rc4.tar.gz
+Source0  : https://github.com/projectacrn/acrn-hypervisor/archive/v0.1-rc4.tar.gz
 Summary  : No detailed summary available
 Group    : Development/Tools
 License  : BSD-3-Clause
@@ -34,18 +34,18 @@ data components for the acrn-hypervisor package.
 
 
 %prep
-%setup -q -n acrn-hypervisor-0.1-rc2
+%setup -q -n acrn-hypervisor-0.1-rc4
 
 %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=1520602638
+export SOURCE_DATE_EPOCH=1524072594
 make  %{?_smp_mflags} PLATFORM=uefi
 
 %install
-export SOURCE_DATE_EPOCH=1520602638
+export SOURCE_DATE_EPOCH=1524072594
 rm -rf %{buildroot}
 %make_install PLATFORM=uefi
 
diff --git a/options.conf b/options.conf
index 602663d..a0f52ac 100644
--- a/options.conf
+++ b/options.conf
@@ -1,6 +1,6 @@
 [package]
 name = acrn-hypervisor
-url = https://github.com/projectacrn/acrn-hypervisor/archive/v0.1-rc2.tar.gz
+url = https://github.com/projectacrn/acrn-hypervisor/archive/v0.1-rc4.tar.gz
 archives = 
 giturl = 
 
@@ -17,6 +17,8 @@ autoupdate = false
 broken_c++ = false
 # disable parallelization during build
 broken_parallel_build = false
+# this package is a library compatability package and only ships versioned library files
+compat = false
 # set conservative build flags
 conservative_flags = false
 # pass -ffast-math to compiler
diff --git a/release b/release
index 7ed6ff8..1e8b314 100644
--- a/release
+++ b/release
@@ -1 +1 @@
-5
+6
diff --git a/upstream b/upstream
index 2eeea58..b39dcea 100644
--- a/upstream
+++ b/upstream
@@ -1 +1 @@
-d531f8d8671cdb47b23a354537dd2e1343915b1a/v0.1-rc2.tar.gz
+998a6748def83806a0fa48e3c1de18c3b395b31b/v0.1-rc4.tar.gz