diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..d50ee95
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,2 @@
+public/api.html linguist-documentation
+public/openapi.json linguist-documentation
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 65744ab..1b6076b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,9 +1,10 @@
 # Changelog
 
-## Changes 4/17 
+## Changes 4/17/2025
 
 - Generate OpenAPI spec and API HTML docs
   - Fully auto‑generated OpenAPI spec (`openapi.json`) and interactive HTML docs (`api.html`) powered by Redoc.
+- .gitattributes added to mark (`openapi.json`) & (`api.html`) as documentation.
 
 ---