diff --git a/.gitignore b/.gitignore
index be911e9..98a331b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -17,6 +17,7 @@ _autosave-*
 *-save.pro
 *-save.kicad_pcb
 fp-info-cache
+*.lck
 
 # Netlist files (exported from Eeschema)
 *.net