diff --git a/docs/advanced-usage.md b/docs/advanced-usage.md
index 730bbd8f..243be433 100644
--- a/docs/advanced-usage.md
+++ b/docs/advanced-usage.md
@@ -322,7 +322,7 @@ jobs:
 
 **cache-hit** output is available with a boolean value that indicates whether a cache hit occurred on the primary key:
 
-```
+```yaml
 jobs:
   build:
     runs-on: ubuntu-latest