diff --git a/.drone.yml b/.drone.yml
index 4a51984..ce88c14 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -3,6 +3,11 @@ kind: pipeline
 name: latex
 
 steps:
+- name: yaml lint
+  image: cytopia/yamllint
+  commands:
+  - yamllint .drone.yml
+
 - name: build
   image: niccokunzmann/ci-latex
   commands:
diff --git a/.yamllint b/.yamllint
new file mode 100644
index 0000000..35c26b0
--- /dev/null
+++ b/.yamllint
@@ -0,0 +1,9 @@
+---
+extends: default
+
+rules:
+  indentation:
+    indent-sequences: consistent
+  line-length:
+    max: 120
+    level: warning