diff --git a/.travis.yml b/.travis.yml
index 61ced7a..a4a2e74 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,12 +1,37 @@
 language: node_js
 dist: trusty
-node_js:
-  - 6
-  - 7
-env:
-  - CXX=g++-4.8
 cache: yarn
+env:
+  global:
+    - CXX=g++-4.8
 
-before_install:
-  - curl -o- -L https://yarnpkg.com/install.sh | bash -s -- --version 1.1.0
-  - export PATH="$HOME/.yarn/bin:$PATH"
+jobs:
+  include:
+    - env: task=npm-test
+      node_js:
+        - 6
+      before_install:
+        - curl -o- -L https://yarnpkg.com/install.sh | bash -s -- --version 1.1.0
+        - export PATH="$HOME/.yarn/bin:$PATH"
+    - env: task=npm-test
+      node_js:
+        - 7
+      before_install:
+        - curl -o- -L https://yarnpkg.com/install.sh | bash -s -- --version 1.1.0
+        - export PATH="$HOME/.yarn/bin:$PATH"
+    - env: task=ShellCheck
+      script:
+        - shellcheck bin/*
+      language: generic
+    - env: task=doctoc
+      install: npm install doctoc
+      script:
+        - cp README.md README.md.orig
+        - npm run doctoc
+        - diff -q README.md README.md.orig
+      language: generic
+    - env: task=json-lint
+      install: npm install jsonlint
+      script:
+        - npm run jsonlint
+      language: generic