diff --git a/03-core-features/filters/included-file.md b/03-core-features/filters/included-file.md
index e69de29b..a3bc6d4e 100644
--- a/03-core-features/filters/included-file.md
+++ b/03-core-features/filters/included-file.md
@@ -0,0 +1,5 @@
+paths:
+  # include markdown files
+  - "03-core-features/filters/*.md"
+  # Exclude txt files
+  - "!03-core-features/filters/*.txt"
\ No newline at end of file