diff --git a/03-core-features/filters/excluded-file.txt b/03-core-features/filters/excluded-file.txt
index e69de29b..038ad211 100644
--- a/03-core-features/filters/excluded-file.txt
+++ b/03-core-features/filters/excluded-file.txt
@@ -0,0 +1,5 @@
+"   paths:
+      # include markdown files
+      - "03-core-features/filters/*.md"
+      # Exclude txt files
+      - "!03-core-features/filters/*.txt