diff --git a/.gitignore b/.gitignore
index dbd79dc..d964339 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,7 @@
 # kicad backup/cache files
 *-backups
 *.bak
+~*.lck
 fp-info-cache
 
 # prerelease outputs directory