diff --git a/.gitignore b/.gitignore
index 53c4d2cb..7e47ccfb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,3 +24,6 @@ test_results/
 *.ext4
 *.pkg
 *.swp
+
+# API docs for local preview only.
+_site/