diff --git a/REFERENCE.md b/REFERENCE.md
index 13e98b1..82fd34f 100644
--- a/REFERENCE.md
+++ b/REFERENCE.md
@@ -409,7 +409,7 @@ Default value: `'present'`
 
 Data type: `Variant[Stdlib::Httpurl,Array[Stdlib::Httpurl,1]]`
 
-URL containing stable, testing and config apt or yum repositories. If an array is specified then on RedHat family multiple repos will be configured with failover. On Debian family the array can have length 1 only, failover is not supported for Debian.
+URL containing stable, testing and config apt or yum repositories. If an array is specified then on RedHat family or Debian 13 or newer multiple repos will be configured with failover. For older Debian and Ubuntu only one repository can be configured.
 
 ##### <a name="-cvmfs--repo_base_alt"></a>`repo_base_alt`
 
diff --git a/data/family/Debian.yaml b/data/family/Debian.yaml
index c075efb..3aa7cf5 100644
--- a/data/family/Debian.yaml
+++ b/data/family/Debian.yaml
@@ -1,5 +1,7 @@
 ---
 
-cvmfs::repo_base:   https://cvmrepo.s3.cern.ch/cvmrepo/apt
+cvmfs::repo_base:
+  - 'https://cvmrepo.s3.cern.ch/cvmrepo/apt'
+  - 'https://cvmrepo.web.cern.ch/cvmrepo/apt'
 cvmfs::repo_base_alt:   https://cvmrepo.web.cern.ch/cvmrepo/apt
 cvmfs::repo_gpgkey: https://cvmrepo.s3.cern.ch/cvmrepo/apt/cernvm.gpg
diff --git a/data/name/Debian/11.yaml b/data/name/Debian/11.yaml
new file mode 100644
index 0000000..b324569
--- /dev/null
+++ b/data/name/Debian/11.yaml
@@ -0,0 +1,2 @@
+---
+cvmfs::repo_base: 'https://cvmrepo.s3.cern.ch/cvmrepo/apt'
diff --git a/data/name/Debian/12.yaml b/data/name/Debian/12.yaml
new file mode 100644
index 0000000..b324569
--- /dev/null
+++ b/data/name/Debian/12.yaml
@@ -0,0 +1,2 @@
+---
+cvmfs::repo_base: 'https://cvmrepo.s3.cern.ch/cvmrepo/apt'
diff --git a/data/name/Ubuntu/22.04.yaml b/data/name/Ubuntu/22.04.yaml
new file mode 100644
index 0000000..b324569
--- /dev/null
+++ b/data/name/Ubuntu/22.04.yaml
@@ -0,0 +1,2 @@
+---
+cvmfs::repo_base: 'https://cvmrepo.s3.cern.ch/cvmrepo/apt'
diff --git a/data/name/Ubuntu/24.04.yaml b/data/name/Ubuntu/24.04.yaml
new file mode 100644
index 0000000..b324569
--- /dev/null
+++ b/data/name/Ubuntu/24.04.yaml
@@ -0,0 +1,2 @@
+---
+cvmfs::repo_base: 'https://cvmrepo.s3.cern.ch/cvmrepo/apt'
diff --git a/manifests/apt.pp b/manifests/apt.pp
index e462d28..28b5bb3 100644
--- a/manifests/apt.pp
+++ b/manifests/apt.pp
@@ -9,8 +9,6 @@
   Optional[Stdlib::Httpurl] $repo_proxy                                 = $cvmfs::repo_proxy,
   Boolean $repo_gpgcheck                                                = $cvmfs::repo_gpgcheck,
 ) {
-  # We already reject arrays of more than one element in init.pp
-
   if ($facts['os']['name'] == 'Debian' and versioncmp($facts['os']['release']['major'],'12') <= 0 ) or
   ($facts['os']['name'] == 'Ubuntu' and versioncmp($facts['os']['release']['major'],'24.04') <= 0 ) {
     $_source_format = 'list'
@@ -20,6 +18,7 @@
       source  => $repo_gpgkey,
     }
     $_keyring = undef
+    # We already reject arrays of more than one element in init.pp
     $_location = Array($repo_base,true)[0] # Take first one for old format.
     $_release_cvmfs = "${facts['os']['distro']['codename']}-prod"
     $_release_testing = "${facts['os']['distro']['codename']}-testing"
diff --git a/manifests/init.pp b/manifests/init.pp
index 02b4bd5..1b454c2 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -91,7 +91,7 @@
 # @param cvmfs_max_ttl Max ttl.
 # @param cvmfs_version Version of cvmfs to install.
 # @param repo_base
-#   URL containing stable, testing and config apt or yum repositories. If an array is specified then on RedHat family multiple repos will be configured with failover. On Debian family the array can have length 1 only, failover is not supported for Debian.
+#   URL containing stable, testing and config apt or yum repositories. If an array is specified then on RedHat family or Debian 13 or newer multiple repos will be configured with failover. For older Debian and Ubuntu only one repository can be configured.
 # @param repo_base_alt URL containing stable, Same as repo_base, hosted on a different backend. Default in hiera data.
 # @param repo_includepkgs Specify an includepkgs to the yum repos to ignore other packages.
 # @param repo_priority Yum priority of repositories
@@ -242,8 +242,11 @@
   }
 
   # Unsupported combinations
-  if $facts['os']['family'] == 'Debian' and $repo_base =~ Array[Any,2] {
-    fail('With Debian family OSes only a single url for the \"repo_base\" parameter is supported')
+  if (
+    ($facts['os']['name'] == 'Debian' and versioncmp($facts['os']['release']['major'],'12') <= 0 ) or
+    ($facts['os']['name'] == 'Ubuntu' and versioncmp($facts['os']['release']['major'],'24.04') <= 0 )
+  ) and $repo_base =~ Array[Any,2] {
+    fail('With Debian 11, 12 or Ubuntu 22.04, 24.04 only a single url for the \"repo_base\" parameter is supported')
   }
 
   if $repo_manage {
diff --git a/spec/classes/init_spec.rb b/spec/classes/init_spec.rb
index 7787266..278b955 100644
--- a/spec/classes/init_spec.rb
+++ b/spec/classes/init_spec.rb
@@ -264,21 +264,30 @@
                   {
                     ensure: 'present',
                     enabled: true,
-                    location: ['https://cvmrepo.s3.cern.ch/cvmrepo/apt'],
+                    location: [
+                      'https://cvmrepo.s3.cern.ch/cvmrepo/apt',
+                      'https://cvmrepo.web.cern.ch/cvmrepo/apt',
+                    ],
                   }
                 )
                 is_expected.to contain_apt__source('cvmfs-testing').with(
                   {
                     ensure: 'present',
                     enabled: false,
-                    location: ['https://cvmrepo.s3.cern.ch/cvmrepo/apt'],
+                    location: [
+                      'https://cvmrepo.s3.cern.ch/cvmrepo/apt',
+                      'https://cvmrepo.web.cern.ch/cvmrepo/apt',
+                    ],
                   }
                 )
                 is_expected.to contain_apt__source('cvmfs-future').with(
                   {
                     ensure: 'present',
                     enabled: false,
-                    location: ['https://cvmrepo.s3.cern.ch/cvmrepo/apt'],
+                    location: [
+                      'https://cvmrepo.s3.cern.ch/cvmrepo/apt',
+                      'https://cvmrepo.web.cern.ch/cvmrepo/apt',
+                    ],
                   }
                 )
               }
@@ -418,7 +427,24 @@
               it { is_expected.to contain_yumrepo('cvmfs-testing').with_baseurl(%r{^http://example.org/base/cvmfs-testing/(EL|fedora)/\d+/x86_64 http://example.net/base/cvmfs-testing/(EL|fedora)/\d+/x86_64$}) }
               it { is_expected.to contain_yumrepo('cvmfs-config').with_baseurl(%r{^http://example.org/base/cvmfs-config/(EL|fedora)/\d+/x86_64 http://example.net/base/cvmfs-config/(EL|fedora)/\d+/x86_64$}) }
             else
-              it { is_expected.to compile.and_raise_error(%r{Debian family OSes only a single url}) }
+              case [facts[:os]['name'], facts[:os]['release']['major']]
+              when %w[Debian 11], %w[Debian 12], ['Ubuntu', '22.04'], ['Ubuntu', '24.04']
+                it { is_expected.to compile.and_raise_error(%r{only a single url for the}) }
+              else
+                it {
+                  is_expected.to contain_apt__source('cvmfs').with(
+                    {
+                      ensure: 'present',
+                      enabled: true,
+                      location: [
+                        'http://example.org/base',
+                        'http://example.net/base',
+                      ],
+                    }
+                  )
+                }
+
+              end
             end
           end