diff --git a/.gitattributes b/.gitattributes
index 92817f5..39331ce 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,3 +1,4 @@
 out/* linguist-vendored
 *.kicad_pcb linguist-detectable=true
+*.kicad_sch linguist-detectable=true
 *.sch linguist-detectable=true
diff --git a/.gitignore b/.gitignore
index 176abe6..15d2d50 100644
--- a/.gitignore
+++ b/.gitignore
@@ -22,6 +22,8 @@ cpld_tb.*/
 *.sch-bak
 *.kicad_pcb-bak
 *.dcm
+*.kicad_prl
+pcb/**/*-backups/
 pcb/*.xml
 
 ## Etc.