diff --git a/Global/Vim.gitignore b/Global/Vim.gitignore
index 6d21783d..19cfe22f 100644
--- a/Global/Vim.gitignore
+++ b/Global/Vim.gitignore
@@ -12,3 +12,5 @@ Session.vim
 *~
 # Auto-generated tag files
 tags
+# Persistent undo
+[._]*.un~