diff --git a/install/package.rst b/install/package.rst
index 427a11e6..8ca8d44f 100644
--- a/install/package.rst
+++ b/install/package.rst
@@ -207,12 +207,6 @@ Add Repository
             $ sudo curl -fsSL "https://go.packager.io/srv/deb/zammad/zammad/gpg-key.gpg" \
                 -o /usr/share/keyrings/zammad.gpg && sudo chmod 644 /usr/share/keyrings/zammad.gpg
 
-      Add repository (Debian 11)
-         .. code-block:: console
-
-            $ sudo curl -fsSL "https://go.packager.io/srv/zammad/zammad/stable/installer/debian/11.list" \
-                -o /etc/apt/sources.list.d/zammad.list
-
       Add repository (Debian 12)
          .. code-block:: console
 
diff --git a/prerequisites/software.rst b/prerequisites/software.rst
index 78fc9a89..879ad84f 100644
--- a/prerequisites/software.rst
+++ b/prerequisites/software.rst
@@ -74,7 +74,7 @@ Below you can find all distributions Zammad provides packages for.
    :widths: 20, 20
 
    "CentOS / RHEL", "9, 10"
-   "Debian", "11, 12 & 13"
+   "Debian", "12 & 13"
    "OpenSUSE Leap / SLES", "15 & 16"
    "Ubuntu", "22.04, 24.04 & 26.04"
 
@@ -118,7 +118,7 @@ automatically be installed with the Zammad-Package.
 
             $ sudo apt install libimlib2t64
 
-      Debian 11 & 12
+      Debian 12
          .. code-block:: console
 
             $ sudo apt install libimlib2