diff --git a/cd.sh b/cd.sh
index a9b5700..b7c7e02 100644
--- a/cd.sh
+++ b/cd.sh
@@ -67,6 +67,7 @@ cd_set_environment_variables () {
             CD_CA_ROOT="/etc/pki/ca-trust/source/anchors"
             CD_CMD_CA="update-ca-trust"
             CD_CMD_CLEAN="dnf clean all"
+            CD_CMD_INSTALL="dnf install --assumeyes"
             CD_CMD_UPDATE="dnf makecache"
             CD_CMD_UPGRADE="dnf upgrade --assumeyes"
             CD_PKG_PKG=""
@@ -91,12 +92,14 @@ skip_if_unavailable=False
             CD_OS_REPO="${CD_DEFAULT_REPO_DEBIAN}"
             [ "${CD_REPO_DEBIAN}" ] && CD_OS_REPO="${CD_REPO_DEBIAN}"
             case "${CD_OS_VERSION}" in
-                "bookworm"|"bullseye") cd_nop ;;
+                "bookworm") CD_PYTHON_COMMAND="python3.11" ;;
+                "bullseye") CD_PYTHON_COMMAND="python3.9" ;;
                 *) cd_error_os "CD_OS_VERSION" ;;
             esac
             CD_CA_ROOT="/usr/local/share/ca-certificates"
             CD_CMD_CA="update-ca-certificates"
             CD_CMD_CLEAN="apt-get clean"
+            CD_CMD_INSTALL="apt-get install --assume-yes"
             CD_CMD_UPDATE="apt-get update"
             CD_CMD_UPGRADE="apt-get upgrade --assume-yes"
             CD_PKG_PKG="apt-utils"
@@ -110,7 +113,6 @@ Dir::Etc::SourceParts \"\";
 "
             CD_PM_HTTPS_PATH="/etc/apt/apt.conf.d/https"
             CD_PM_HTTPS_TEXT="Acquire::https::Verify-Peer False;"
-            CD_PYTHON_COMMAND="python3"
             CD_PYTHON_PACKAGE="python3"
             CD_PYTHON_PACKAGES="/usr/lib/python3/dist-packages"
         ;;
@@ -262,6 +264,8 @@ cd_install_git () {
 cd_install_python () {
     cd_step "Install Python"
     cd_install_package "${CD_PYTHON_PACKAGE}"
+    cd_split
+    cd_ln_python "${CD_PYTHON_COMMAND}"
 }
 
 cd_clean_packages_cache () {
@@ -354,10 +358,14 @@ local variable="${1}"
 
 cd_install_package () {
     if [ "${1}" ] ; then
-        case "${CD_OS_ID}" in
-            "${CD_OS_DEBIAN}") apt-get install --assume-yes "${1}" || exit ;;
-            "${CD_OS_ALMA}") dnf install --assumeyes "${1}" || exit ;;
-        esac
+        ${CD_CMD_INSTALL} "${1}" || exit
+    fi
+}
+
+cd_ln_python () {
+    if [ "${1}" ] ; then
+        echo "python3 → ${1}"
+        ln --force --symbolic "${1}" "/usr/bin/python3" || exit
     fi
 }