diff --git a/aptly/server/mirror/ubuntu/trusty/ubuntu.yml b/aptly/server/mirror/ubuntu/trusty/ubuntu.yml
index 3cd7c7b..3495967 100644
--- a/aptly/server/mirror/ubuntu/trusty/ubuntu.yml
+++ b/aptly/server/mirror/ubuntu/trusty/ubuntu.yml
@@ -1,6 +1,7 @@
 parameters:
   _param:
     linux_system_country_code: cz
+    aptly_server_mirror_ubuntu_trusty_sources: ${_param:aptly_server_mirror_ubuntu_sources}
   aptly:
     server:
       mirror:
@@ -8,6 +9,7 @@
         trusty-main:
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
           distribution: trusty
+          sources: ${_param:aptly_server_mirror_ubuntu_trusty_sources}
           components: main
           architectures: amd64
           gpgkeys:
@@ -21,6 +23,7 @@
         trusty-multiverse:
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
           distribution: trusty
+          sources: ${_param:aptly_server_mirror_ubuntu_trusty_sources}
           components: multiverse
           architectures: amd64
           gpgkeys:
@@ -33,6 +36,7 @@
               - ubuntu/trusty
         trusty-restricted:
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
+          sources: ${_param:aptly_server_mirror_ubuntu_trusty_sources}
           distribution: trusty
           components: restricted
           architectures: amd64
@@ -46,6 +50,7 @@
               - ubuntu/trusty
         trusty-universe:
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
+          sources: ${_param:aptly_server_mirror_ubuntu_trusty_sources}
           distribution: trusty
           components: universe
           architectures: amd64
@@ -61,6 +66,7 @@
         # trusty-updates
         trusty-updates-main:
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
+          sources: ${_param:aptly_server_mirror_ubuntu_trusty_sources}
           distribution: trusty-updates
           components: main
           architectures: amd64
@@ -74,6 +80,7 @@
               - ubuntu/trusty-updates
         trusty-updates-multiverse:
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
+          sources: ${_param:aptly_server_mirror_ubuntu_trusty_sources}
           distribution: trusty-updates
           components: multiverse
           architectures: amd64
@@ -87,6 +94,7 @@
               - ubuntu/trusty-updates
         trusty-updates-restricted:
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
+          sources: ${_param:aptly_server_mirror_ubuntu_trusty_sources}
           distribution: trusty-updates
           components: restricted
           architectures: amd64
@@ -100,6 +108,7 @@
               - ubuntu/trusty-updates
         trusty-updates-universe:
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
+          sources: ${_param:aptly_server_mirror_ubuntu_trusty_sources}
           distribution: trusty-updates
           components: universe
           architectures: amd64
@@ -115,6 +124,7 @@
         #trusty-security:
         trusty-security-main:
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
+          sources: ${_param:aptly_server_mirror_ubuntu_trusty_sources}
           distribution: trusty-security
           components: main
           architectures: amd64
@@ -128,6 +138,7 @@
               - ubuntu/trusty-security
         trusty-security-multiverse:
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
+          sources: ${_param:aptly_server_mirror_ubuntu_trusty_sources}
           distribution: trusty-security
           components: multiverse
           architectures: amd64
@@ -141,6 +152,7 @@
               - ubuntu/trusty-security
         trusty-security-restricted:
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
+          sources: ${_param:aptly_server_mirror_ubuntu_trusty_sources}
           distribution: trusty-security
           components: restricted
           architectures: amd64
@@ -154,6 +166,7 @@
               - ubuntu/trusty-security
         trusty-security-universe:
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
+          sources: ${_param:aptly_server_mirror_ubuntu_trusty_sources}
           distribution: trusty-security
           components: universe
           architectures: amd64
@@ -169,6 +182,7 @@
         #trusty-proposed:
         trusty-proposed-main:
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
+          sources: ${_param:aptly_server_mirror_ubuntu_trusty_sources}
           distribution: trusty-proposed
           components: main
           architectures: amd64
@@ -182,6 +196,7 @@
               - ubuntu/trusty-proposed
         trusty-proposed-multiverse:
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
+          sources: ${_param:aptly_server_mirror_ubuntu_trusty_sources}
           distribution: trusty-proposed
           components: multiverse
           architectures: amd64
@@ -195,6 +210,7 @@
               - ubuntu/trusty-proposed
         trusty-proposed-restricted:
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
+          sources: ${_param:aptly_server_mirror_ubuntu_trusty_sources}
           distribution: trusty-proposed
           components: restricted
           architectures: amd64
@@ -208,6 +224,7 @@
               - ubuntu/trusty-proposed
         trusty-proposed-universe:
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
+          sources: ${_param:aptly_server_mirror_ubuntu_trusty_sources}
           distribution: trusty-proposed
           components: universe
           architectures: amd64
@@ -223,6 +240,7 @@
         #trusty-backports:
         trusty-backports-main:
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
+          sources: ${_param:aptly_server_mirror_ubuntu_trusty_sources}
           distribution: trusty-backports
           components: main
           architectures: amd64
@@ -236,6 +254,7 @@
               - ubuntu/trusty-backports
         trusty-backports-multiverse:
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
+          sources: ${_param:aptly_server_mirror_ubuntu_trusty_sources}
           distribution: trusty-backports
           components: multiverse
           architectures: amd64
@@ -249,6 +268,7 @@
               - ubuntu/trusty-backports
         trusty-backports-restricted:
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
+          sources: ${_param:aptly_server_mirror_ubuntu_trusty_sources}
           distribution: trusty-backports
           components: restricted
           architectures: amd64
@@ -262,6 +282,7 @@
               - ubuntu/trusty-backports
         trusty-backports-universe:
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
+          sources: ${_param:aptly_server_mirror_ubuntu_trusty_sources}
           distribution: trusty-backports
           components: universe
           architectures: amd64
diff --git a/aptly/server/mirror/ubuntu/xenial/ubuntu.yml b/aptly/server/mirror/ubuntu/xenial/ubuntu.yml
index 4675063..6b41aee 100644
--- a/aptly/server/mirror/ubuntu/xenial/ubuntu.yml
+++ b/aptly/server/mirror/ubuntu/xenial/ubuntu.yml
@@ -2,12 +2,13 @@
   _param:
     linux_system_country_code_default: cz
     linux_system_country_code: ${_param:linux_system_country_code_default}
+    aptly_server_mirror_ubuntu_xenial_sources: ${_param:aptly_server_mirror_ubuntu_sources}
   aptly:
     server:
       mirror:
         # xenial
         xenial-main:
-          sources: true
+          sources: ${_param:aptly_server_mirror_ubuntu_xenial_sources}
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
           distribution: xenial
           components: main
@@ -21,7 +22,7 @@
             distributions:
               - ubuntu/xenial
         xenial-multiverse:
-          sources: true
+          sources: ${_param:aptly_server_mirror_ubuntu_xenial_sources}
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
           distribution: xenial
           components: multiverse
@@ -35,7 +36,7 @@
             distributions:
               - ubuntu/xenial
         xenial-restricted:
-          sources: true
+          sources: ${_param:aptly_server_mirror_ubuntu_xenial_sources}
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
           distribution: xenial
           components: restricted
@@ -49,7 +50,7 @@
             distributions:
               - ubuntu/xenial
         xenial-universe:
-          sources: true
+          sources: ${_param:aptly_server_mirror_ubuntu_xenial_sources}
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
           distribution: xenial
           components: universe
@@ -65,7 +66,7 @@
 
         # xenial-updates
         xenial-updates-main:
-          sources: true
+          sources: ${_param:aptly_server_mirror_ubuntu_xenial_sources}
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
           distribution: xenial-updates
           components: main
@@ -79,7 +80,7 @@
             distributions:
               - ubuntu/xenial-updates
         xenial-updates-multiverse:
-          sources: true
+          sources: ${_param:aptly_server_mirror_ubuntu_xenial_sources}
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
           distribution: xenial-updates
           components: multiverse
@@ -93,7 +94,7 @@
             distributions:
               - ubuntu/xenial-updates
         xenial-updates-restricted:
-          sources: true
+          sources: ${_param:aptly_server_mirror_ubuntu_xenial_sources}
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
           distribution: xenial-updates
           components: restricted
@@ -107,7 +108,7 @@
             distributions:
               - ubuntu/xenial-updates
         xenial-updates-universe:
-          sources: true
+          sources: ${_param:aptly_server_mirror_ubuntu_xenial_sources}
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
           distribution: xenial-updates
           components: universe
@@ -123,7 +124,7 @@
 
         #xenial-security:
         xenial-security-main:
-          sources: true
+          sources: ${_param:aptly_server_mirror_ubuntu_xenial_sources}
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
           distribution: xenial-security
           components: main
@@ -137,7 +138,7 @@
             distributions:
               - ubuntu/xenial-security
         xenial-security-multiverse:
-          sources: true
+          sources: ${_param:aptly_server_mirror_ubuntu_xenial_sources}
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
           distribution: xenial-security
           components: multiverse
@@ -151,7 +152,7 @@
             distributions:
               - ubuntu/xenial-security
         xenial-security-restricted:
-          sources: true
+          sources: ${_param:aptly_server_mirror_ubuntu_xenial_sources}
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
           distribution: xenial-security
           components: restricted
@@ -165,7 +166,7 @@
             distributions:
               - ubuntu/xenial-security
         xenial-security-universe:
-          sources: true
+          sources: ${_param:aptly_server_mirror_ubuntu_xenial_sources}
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
           distribution: xenial-security
           components: universe
@@ -181,7 +182,7 @@
 
         #xenial-proposed:
         xenial-proposed-main:
-          sources: true
+          sources: ${_param:aptly_server_mirror_ubuntu_xenial_sources}
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
           distribution: xenial-proposed
           components: main
@@ -195,7 +196,7 @@
             distributions:
               - ubuntu/xenial-proposed
         xenial-proposed-multiverse:
-          sources: true
+          sources: ${_param:aptly_server_mirror_ubuntu_xenial_sources}
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
           distribution: xenial-proposed
           components: multiverse
@@ -263,7 +264,7 @@
             distributions:
               - ubuntu/xenial-backports
         xenial-backports-restricted:
-          sources: true
+          sources: ${_param:aptly_server_mirror_ubuntu_xenial_sources}
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
           distribution: xenial-backports
           components: restricted
@@ -277,7 +278,7 @@
             distributions:
               - ubuntu/xenial-backports
         xenial-backports-universe:
-          sources: true
+          sources: ${_param:aptly_server_mirror_ubuntu_xenial_sources}
           source: http://${_param:linux_system_country_code}.archive.ubuntu.com/ubuntu/
           distribution: xenial-backports
           components: universe