diff --git a/setup.bash b/setup.bash
index 36cf0e8..9ae6dcb 100644
--- a/setup.bash
+++ b/setup.bash
@@ -282,10 +282,16 @@ if [ -n "${NODEJS_VER}" ]; then
   bash "/tmp/${INSTALL_FILE}" "${NODEJS_VER}"
 fi
 
+# yarn
+if [ -z "$(type -p yarn)" ]; then
+  echo "installing yarn..."
+  npm install --silent yarn -g > /dev/null
+fi
+
 # jshint
-if [ -z "$(which jshint | grep jshint)" ]; then
+if [ -z "$(type -p jshint)" ]; then
   echo "installing jshint..."
-  npm install --silent jshint -g > /dev/null
+  yarn install --silent jshint -g > /dev/null
 fi
 
 echo ""