diff --git a/.gitignore b/.gitignore
index a8098cd..2d2948c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,6 +10,7 @@
 *.kicad_prl
 *.sch-bak
 *~
+*.lck
 _autosave-*
 **/#auto_saved_files#
 *.tmp