diff --git a/.gitignore b/.gitignore
index 58c9f11..5ae08bf 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,10 @@
 **
 !.gitignore
 !to-m4b.sh
+!/out
+!/out/.gitkeep
+!src/
+!src/.gitkeep
 
 *~
 
diff --git a/out/.gitkeep b/out/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/src/.gitkeep b/src/.gitkeep
new file mode 100644
index 0000000..e69de29