diff --git a/scripts/install-node b/scripts/install-node
index 24be9f5..cf6122d 100755
--- a/scripts/install-node
+++ b/scripts/install-node
@@ -2,6 +2,9 @@
 set -xeuo pipefail
 IFS=$'\n\t'
 
+NODE_INSTALL_VERSION=${1}
+YARN_INSTALL_VERSION=${2}
+
 # Map MAJOR.MINOR.patch -> MAJOR.x
 NODE_MAJOR=$(echo "$NODE_INSTALL_VERSION" | sed -r -e "s/([0-9]+)\.[0-9]+.*/\1\.x/g")