diff --git a/.yamllint b/.yamllint
new file mode 100644
index 000000000..dcf12b68b
--- /dev/null
+++ b/.yamllint
@@ -0,0 +1,3 @@
+extends: default
+rules:
+  document-start: {level: error}
diff --git a/circle.yml b/circle.yml
index 0c2a75455..d71806b82 100644
--- a/circle.yml
+++ b/circle.yml
@@ -4,8 +4,13 @@ machine:
   node:
     version: 4.2
 
+dependencies:
+  pre:
+    - sudo pip install yamllint
+
 test:
   override:
+    - npm run --silent lint_yml
     - npm run --silent lint
     - npm run --silent lint_md
     - npm run --silent test