diff --git a/kokoro-linux.sh b/kokoro-linux.sh
index 30a79b21..7de5920c 100755
--- a/kokoro-linux.sh
+++ b/kokoro-linux.sh
@@ -22,6 +22,7 @@ curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.4/install.sh | b
 set -e
 cd $(dirname $0)
 
+# Install gRPC and its submodules.
 git submodule update --init
 git submodule foreach --recursive git submodule update --init
 
@@ -29,14 +30,17 @@ node_versions="6 7 8"
 
 # TODO(mlumish): Add electron tests
 
-# Install dependencies and link packages together
-npm install
-./node_modules/.bin/gulp setup
-
 for version in ${node_versions}
 do
+  # Install and setup node for the version we want.
   nvm install $version
-  # Rebuild libraries and run tests
+  nvm use $version
+
+  # Install dependencies and link packages together.
+  npm install
+  ./node_modules/.bin/gulp setup
+
+  # Rebuild libraries and run tests.
   ./node_modules/.bin/gulp native.test || FAILED="true"
 done