diff --git a/.gitignore b/.gitignore
index a2fe891..98d42c1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,6 +16,7 @@ Hardware/*/*.tmp
 Hardware/*/*-save.pro
 Hardware/*/*-save.kicad_pcb
 Hardware/*/fp-info-cache
+Hardware/*/*.lck
 
 # Netlist files (exported from Eeschema)
 Hardware/*/*.net