diff --git a/tools/cross-test.sh b/tools/cross-test.sh
new file mode 100755
index 0000000..40390ab
--- /dev/null
+++ b/tools/cross-test.sh
@@ -0,0 +1,21 @@
+#/bin/bash
+#
+# Run tests for all relevant versions of io.js/node.js
+#
+# nvm
+#   https://github.com/creationix/nvm
+#
+# $ git clone https://github.com/creationix/nvm.git ~/.nvm && cd ~/.nvm && git checkout `git describe --abbrev=0 --tags`
+# $ echo "source ~/.nvm/nvm.sh" >> ~/.bashrc
+#
+
+source ~/.nvm/nvm.sh
+
+nvm install iojs
+node_modules/.bin/_mocha ./test
+
+nvm install 0.12.2
+node_modules/.bin/_mocha ./test
+
+nvm install 0.10.38
+node_modules/.bin/_mocha ./test