diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..42ef490
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,13 @@
+on:
+  push:
+    branches: ["**"]
+
+
+jobs:
+  ci:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - run: npm install --production
+    - run: "./test.sh"
+
diff --git a/actions.test.js b/actions.test.js
deleted file mode 100644
index b25c065..0000000
--- a/actions.test.js
+++ /dev/null
@@ -1,2 +0,0 @@
-const assert = require('assert')
-
diff --git a/humans.txt.yaml b/humans.txt.yaml
index a08ed76..b48fa17 100644
--- a/humans.txt.yaml
+++ b/humans.txt.yaml
@@ -1,2 +1,2 @@
-humans:
+humans: []
 
diff --git a/test.sh b/test.sh
old mode 100644
new mode 100755
index 9eec1de..22f7736
--- a/test.sh
+++ b/test.sh
@@ -1,8 +1,10 @@
-#!bin/bash
+#!/bin/bash
 
 set -xeuo pipefail
 
-node action.js txt >/tmp/t1
-node action.js json >/tmp/t2
-node action.js shell >/tmp/t3
+node action.js json >/dev/null
+node action.js txt
+# check default arg
+node action.js >/dev/null
+node action.js shell