diff --git a/.gitignore b/.gitignore
index 4bbb548..8e1b336 100644
--- a/.gitignore
+++ b/.gitignore
@@ -418,3 +418,6 @@ FodyWeavers.xsd
 # Mocha CUP output directory
 output
 
+# Backups (made by Notepad++)
+*.bak
+