diff --git a/Elisp.gitignore b/Elisp.gitignore
index 9b4291b..206569d 100644
--- a/Elisp.gitignore
+++ b/Elisp.gitignore
@@ -3,3 +3,9 @@
 
 # Packaging
 .cask
+
+# Backup files
+*~
+
+# Undo-tree save-files
+*.~undo-tree