diff --git a/docs/.gitignore b/docs/.gitignore
index a48721f8..b58c623c 100644
--- a/docs/.gitignore
+++ b/docs/.gitignore
@@ -8,6 +8,7 @@
 .docusaurus
 .cache-loader
 .package-lock.json
+# api-reference-docs are generated by sphinx and placed here.
 /static/api-reference-docs/
 
 # Misc