1 files changed, 3 insertions, 0 deletions
diff --git a/.document b/.document
index 82ca602bfb..753d6f9892 100644
--- a/.document
+++ b/.document
@@ -42,6 +42,9 @@ lib
 # and some of the ext/ directory (which has its own .document file)
 ext
 
+# For `prism`, ruby code is in lib and c in the prism folder
+prism
+
 # rdoc files
 NEWS.md