diff --git a/scripts/install-node b/scripts/install-node
index c50fc47..ab15cbb 100755
--- a/scripts/install-node
+++ b/scripts/install-node
@@ -5,7 +5,7 @@ set -xeo pipefail
 NODE_VERSION=${1:-7.x}
 YARN_VERSION=${2:-0.27.5-1}
 
-if [ "$NODE_VERSION" = 8.9.0 ]; then NODE_VERSION=8.x; fi
+NODE_VERSION=`echo $NODE_VERSION | sed -r -e "s/([0-9]+)\.[0-9]+/\1\.x/g"`
 
 # add official debian repos for node and yarn
 curl -sS -L https://deb.nodesource.com/setup_${NODE_VERSION} | bash -