diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index aa93c90..25c0e3f 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -15,3 +15,8 @@ repos:
     rev: v17.0.6
     hooks:
       - id: clang-format
+
+  - repo: https://github.com/adrienverge/yamllint.git
+    rev: v1.29.0
+    hooks:
+      - id: yamllint
diff --git a/examples/editable_template_polygon.yaml b/examples/editable_template_polygon.yaml
index 33a8e17..10e0f8c 100644
--- a/examples/editable_template_polygon.yaml
+++ b/examples/editable_template_polygon.yaml
@@ -1,5 +1,5 @@
 esphome:
-  ...
+  # [...]
   on_boot:
     # Set polygon zone with values form number components
     - LD2450.zone.update_polygon:
@@ -7,10 +7,10 @@ esphome:
         polygon: !lambda |-
           return {ld2450::Point(id(point_x1).state*1000,id(point_y1).state*1000), ld2450::Point(id(point_x2).state*1000,id(point_y2).state*1000), ld2450::Point(id(point_x3).state*1000,id(point_y3).state*1000), ld2450::Point(id(point_x4).state*1000,id(point_y4).state*1000)};
 
-...
+# [...]
 
 LD2450:
-  ...
+  # [...]
   zones:
     - zone:
         name: "Templated Zone"