diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 8cad4118..fd658571 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -59,6 +59,7 @@ jobs:
           - "el9"
           - "debian-11"
           - "debian-12"
+          - "debian-13"
           - "ubuntu-2004"
           - "ubuntu-2204"
           - "ubuntu-2404"
diff --git a/README.md b/README.md
index a11314cb..911e9397 100644
--- a/README.md
+++ b/README.md
@@ -33,6 +33,7 @@ known to work on many, many platforms since its creation in 2010.
  * Debian 10
  * Debian 11
  * Debian 12
+ * Debian 13
  * EL 7
  * EL 8
  * EL 9
diff --git a/data/os/Debian/13.yaml b/data/os/Debian/13.yaml
new file mode 100644
index 00000000..d3945c9b
--- /dev/null
+++ b/data/os/Debian/13.yaml
@@ -0,0 +1,24 @@
+---
+# Debian 13 defaults in alphabetical order per class
+ssh::gss_api_authentication: 'yes'
+ssh::hash_known_hosts: 'yes'
+ssh::host: '*'
+ssh::include: '/etc/ssh/ssh_config.d/*.conf'
+ssh::packages:
+  - 'openssh-client'
+ssh::send_env:
+  - 'LANG'
+  - 'LC_*'
+
+ssh::server::accept_env:
+  - 'LANG'
+  - 'LC_*'
+ssh::server::kbd_interactive_authentication: 'no'
+ssh::server::include: '/etc/ssh/sshd_config.d/*.conf'
+ssh::server::packages:
+  - 'openssh-server'
+ssh::server::print_motd: 'no'
+ssh::server::service_name: 'ssh'
+ssh::server::subsystem: 'sftp /usr/lib/openssh/sftp-server'
+ssh::server::use_pam: 'yes'
+ssh::server::x11_forwarding: 'yes'
diff --git a/metadata.json b/metadata.json
index 79623ff3..d852b7a3 100644
--- a/metadata.json
+++ b/metadata.json
@@ -44,7 +44,8 @@
       "operatingsystem": "Debian",
       "operatingsystemrelease": [
         "11",
-        "12"
+        "12",
+        "13"
       ]
     },
     {
diff --git a/spec/acceptance/nodesets/debian-13.yml b/spec/acceptance/nodesets/debian-13.yml
new file mode 100644
index 00000000..a8a98ca2
--- /dev/null
+++ b/spec/acceptance/nodesets/debian-13.yml
@@ -0,0 +1,27 @@
+HOSTS:
+  debian13:
+    roles:
+      - agent
+    platform: debian-13-amd64
+    hypervisor: docker
+    image: debian:13
+    docker_preserve_image: true
+    docker_cmd:
+      - '/sbin/init'
+    docker_image_commands:
+      - 'apt-get install -y wget net-tools systemd-sysv locales apt-transport-https ca-certificates'
+      - 'echo "LC_ALL=en_US.UTF-8" >> /etc/environment'
+      - 'echo "en_US.UTF-8 UTF-8" >> /etc/locale.gen'
+      - 'echo "LANG=en_US.UTF-8" > /etc/locale.conf'
+      - 'locale-gen en_US.UTF-8'
+    docker_env:
+      - LANG=en_US.UTF-8
+      - LANGUAGE=en_US.UTF-8
+      - LC_ALL=en_US.UTF-8
+    docker_container_name: 'ssh-debian13'
+CONFIG:
+  log_level: debug
+  type: foss
+ssh:
+  password: root
+  auth_methods: ["password"]
diff --git a/spec/classes/init_spec.rb b/spec/classes/init_spec.rb
index 5092d861..59812f12 100644
--- a/spec/classes/init_spec.rb
+++ b/spec/classes/init_spec.rb
@@ -22,7 +22,7 @@
     when %r{Debian-10}, %r{Ubuntu-18.04}
       packages_client = ['openssh-client']
       packages_server = ['openssh-server']
-    when %r{Debian-1[12]}, %r{Ubuntu-(20.04|22.04|24.04)}
+    when %r{Debian-1[123]}, %r{Ubuntu-(20.04|22.04|24.04)}
       packages_client = ['openssh-client']
       packages_server = ['openssh-server']
       include_dir     = '/etc/ssh/ssh_config.d'
diff --git a/spec/classes/server_spec.rb b/spec/classes/server_spec.rb
index 352f9ca8..eabe2b3a 100644
--- a/spec/classes/server_spec.rb
+++ b/spec/classes/server_spec.rb
@@ -39,7 +39,7 @@
         packages          = ['openssh-server']
         service_hasstatus = true
         service_name      = 'ssh'
-      when %r{Debian-1[12]}, %r{Ubuntu-(20.04|22.04|24.04)}
+      when %r{Debian-1[123]}, %r{Ubuntu-(20.04|22.04|24.04)}
         config_mode       = '0600'
         packages          = ['openssh-server']
         service_hasstatus = true
diff --git a/spec/fixtures/testing/Debian-13_ssh_config b/spec/fixtures/testing/Debian-13_ssh_config
new file mode 100644
index 00000000..6771373a
--- /dev/null
+++ b/spec/fixtures/testing/Debian-13_ssh_config
@@ -0,0 +1,13 @@
+# This file is being maintained by Puppet.
+# DO NOT EDIT
+#
+# See https://man.openbsd.org/ssh_config for more info
+
+Host *
+  GSSAPIAuthentication yes
+  HashKnownHosts yes
+  Include /etc/ssh/ssh_config.d/*.conf
+  SendEnv LANG
+  SendEnv LC_*
+  SendEnv COLORTERM
+  SendEnv NO_COLOR
diff --git a/spec/fixtures/testing/Debian-13_sshd_config b/spec/fixtures/testing/Debian-13_sshd_config
new file mode 100644
index 00000000..387b2ea1
--- /dev/null
+++ b/spec/fixtures/testing/Debian-13_sshd_config
@@ -0,0 +1,15 @@
+# This file is being maintained by Puppet.
+# DO NOT EDIT
+#
+# See https://man.openbsd.org/sshd_config for more info
+
+Include /etc/ssh/sshd_config.d/*.conf
+AcceptEnv LANG
+AcceptEnv LC_*
+AcceptEnv COLORTERM
+AcceptEnv NO_COLOR
+KbdInteractiveAuthentication no
+PrintMotd no
+Subsystem sftp /usr/lib/openssh/sftp-server
+UsePAM yes
+X11Forwarding yes