diff --git a/.gitignore b/.gitignore
index f35b9ea9..8e6a9798 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,8 +7,9 @@
 # Ignore bundler config
 /.bundle
 
-# Ingore Yardoc temp files
+# Ingore Yardoc temp files and generated documentation
 /.yardoc
+/doc
 
 # Ignore the default SQLite database.
 /db/*.sqlite3