diff --git a/.gitignore b/.gitignore
index 9dbf311..4299d01 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,6 +18,9 @@ _autosave-*
 *-save.kicad_pcb
 fp-info-cache
 
+# lock files
+*.lck
+
 # Netlist files (exported from Eeschema)
 *.net