diff --git a/.gitattributes b/.gitattributes
index 8dc4323..06ac622 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -5,5 +5,7 @@ db/schema.rb linguist-generated
 
 # Mark any vendored files as having been vendored.
 vendor/* linguist-vendored
+
+# Tell git how to diff encrypted files
 config/credentials/*.yml.enc diff=rails_credentials
 config/credentials.yml.enc diff=rails_credentials