diff --git a/files/apt/sources.list b/files/apt/sources.list
index 07e52dc..21f0ab4 100644
--- a/files/apt/sources.list
+++ b/files/apt/sources.list
@@ -1,8 +1,8 @@
 deb http://ftp.debian.org/debian stretch main contrib
-#deb-src http://ftp.debian.org/debian stretch main contrib
+deb-src http://ftp.debian.org/debian stretch main contrib
 
 deb http://ftp.debian.org/debian/ stretch-updates main contrib
-#deb-src http://ftp.debian.org/debian/ stretch-updates main contrib
+deb-src http://ftp.debian.org/debian/ stretch-updates main contrib
 
 deb http://security.debian.org/ stretch/updates main contrib
-#deb-src http://security.debian.org/ stretch/updates main contrib
+deb-src http://security.debian.org/ stretch/updates main contrib