diff --git a/sample.xo-install.cfg b/sample.xo-install.cfg
index 3f06ee9..c8ebef0 100644
--- a/sample.xo-install.cfg
+++ b/sample.xo-install.cfg
@@ -117,3 +117,7 @@ PRESERVE="3"
 # supported protocols are udp and tcp
 # example: tcp://syslog.company.lan:514
 #SYSLOG_TARGET=""
+
+# Configurable network-timeout setting for yarn, in ms.
+# default: 300000 = 300sec
+#YARN_NETWORK_TIMEOUT="300000"
diff --git a/xo-install.sh b/xo-install.sh
index 7995a44..6cdec47 100755
--- a/xo-install.sh
+++ b/xo-install.sh
@@ -49,6 +49,7 @@ GENSUDO="${GENSUDO:-"false"}"
 INSTALL_REPOS="${INSTALL_REPOS:-"true"}"
 SYSLOG_TARGET="${SYSLOG_TARGET:-""}"
 YARN_CACHE_CLEANUP="${YARN_CACHE_CLEANUP:-"false"}"
+YARN_NETWORK_TIMEOUT="${YARN_NETWORK_TIMEOUT:-"300000"}"
 
 # set variables not changeable in configfile
 TIME=$(date +%Y%m%d%H%M)
@@ -707,7 +708,7 @@ function InstallXO {
     printinfo "xo-server and xo-web build takes quite a while. Grab a cup of coffee and lay back"
     echo
     printprog "Running installation"
-    runcmd "cd $INSTALLDIR/xo-builds/xen-orchestra-$TIME && yarn && yarn build"
+    runcmd "cd $INSTALLDIR/xo-builds/xen-orchestra-$TIME && yarn --network-timeout ${YARN_NETWORK_TIMEOUT} && yarn --network-timeout ${YARN_NETWORK_TIMEOUT} build"
     printok "Running installation"
 
     # Install plugins (takes care of 3rd party plugins as well)
@@ -990,7 +991,7 @@ function InstallXOProxy {
     printinfo "xo-proxy build takes quite a while. Grab a cup of coffee and lay back"
     echo
     printprog "Running installation"
-    runcmd "cd $INSTALLDIR/xo-builds/xen-orchestra-$TIME && yarn && yarn build"
+    runcmd "cd $INSTALLDIR/xo-builds/xen-orchestra-$TIME && yarn --network-timeout ${YARN_NETWORK_TIMEOUT} && yarn --network-timeout ${YARN_NETWORK_TIMEOUT} build"
     printok "Running installation"
 
     # shutdown possibly running xo-server