diff --git a/ovs_build/build-ovs-dpdk.sh b/ovs_build/build-ovs-dpdk.sh
index 419f9d0..311c6c6 100755
--- a/ovs_build/build-ovs-dpdk.sh
+++ b/ovs_build/build-ovs-dpdk.sh
@@ -10,6 +10,7 @@ BUILD_HOME=${BUILD_HOME:-/tmp/ovs-dpdk}
 
 export DEB_BUILD_OPTIONS='parallel=8 nocheck'
 
+sudo apt-get update
 sudo apt-get -y --force-yes install devscripts dpkg-dev git wget dkms
 
 rm -rf ${BUILD_HOME}; mkdir -p ${BUILD_HOME}/deb
diff --git a/ovs_build/build-ovs-nsh-dpdk.sh b/ovs_build/build-ovs-nsh-dpdk.sh
index 23cea86..3c4ca45 100755
--- a/ovs_build/build-ovs-nsh-dpdk.sh
+++ b/ovs_build/build-ovs-nsh-dpdk.sh
@@ -10,6 +10,7 @@ BUILD_HOME=${BUILD_HOME:-/tmp/ovs-dpdk}
 
 export DEB_BUILD_OPTIONS='parallel=8 nocheck'
 
+sudo apt-get update
 sudo apt-get -y --force-yes install devscripts dpkg-dev git wget dkms
 
 rm -rf ${BUILD_HOME}; mkdir -p ${BUILD_HOME}/deb