diff --git a/cd.sh b/cd.sh
index a1b2398..69d4f12 100644
--- a/cd.sh
+++ b/cd.sh
@@ -45,12 +45,13 @@ cd_set_environment_variables () {
         "alpine") CD_OS_ID="${CD_OS_ALPINE}" ;;
         "arch") CD_OS_ID="${CD_OS_ARCH}" ;;
         "debian") CD_OS_ID="${CD_OS_DEBIAN}" ;;
+        "fedora") CD_OS_ID="${CD_OS_FEDORA}" ;;
         "rocky") CD_OS_ID="${CD_OS_ROCKY}" ;;
         "ubuntu") CD_OS_ID="${CD_OS_UBUNTU}" ;;
         *) cd_error_os "CD_OS_ID" ;;
     esac
     case "${CD_OS_ID}" in
-        "${CD_OS_ALMA}"|"${CD_OS_ARCH}"|"${CD_OS_ROCKY}")
+        "${CD_OS_ALMA}"|"${CD_OS_ARCH}"|"${CD_OS_FEDORA}"|"${CD_OS_ROCKY}")
             CD_OS_VERSION=$(cd_grep_os VERSION_ID \
                 | sed "s|^\([0-9]\+\)\..*|\1|")
         ;;
@@ -87,6 +88,12 @@ cd_set_environment_variables () {
                 *) cd_error_os "CD_OS_VERSION" ;;
             esac
         ;;
+        "${CD_OS_FEDORA}")
+            case "${CD_OS_VERSION}" in
+                "39"|"40") ;;
+                *) cd_error_os "CD_OS_VERSION" ;;
+            esac
+        ;;
         "${CD_OS_UBUNTU}")
             case "${CD_OS_VERSION}" in
                 "mantic"|"noble") ;;
@@ -102,7 +109,7 @@ cd_set_environment_variables () {
     cd_echo "CD_DNS_FILE" "CD_PKG_CA" "CD_PKG_GIT"
     # shared
     case "${CD_OS_ID}" in
-        "${CD_OS_ALMA}"|"${CD_OS_ROCKY}")
+        "${CD_OS_ALMA}"|"${CD_OS_FEDORA}"|"${CD_OS_ROCKY}")
             CD_CA_ROOT="/etc/pki/ca-trust/source/anchors"
             CD_CMD_CA="update-ca-trust"
         ;;
@@ -119,7 +126,7 @@ cd_set_environment_variables () {
     cd_echo "CD_CA_ROOT" "CD_CMD_CA"
     # common
     case "${CD_OS_ID}" in
-        "${CD_OS_ALMA}"|"${CD_OS_ROCKY}")
+        "${CD_OS_ALMA}"|"${CD_OS_FEDORA}"|"${CD_OS_ROCKY}")
             CD_CMD_CLEAN="dnf clean all"
             CD_CMD_INSTALL="dnf install --assumeyes"
             CD_CMD_QUERY="rpm --query"
@@ -201,6 +208,9 @@ Dir::Etc::SourceParts \"\";
         "${CD_OS_DEBIAN}")
             CD_URL_DEFAULT="http://deb.debian.org/debian"
         ;;
+        "${CD_OS_FEDORA}")
+            CD_URL_DEFAULT="http://download.example/pub/fedora/linux/releases"
+        ;;
         "${CD_OS_ROCKY}")
             CD_URL_DEFAULT="http://dl.rockylinux.org/\$contentdir"
         ;;
@@ -220,6 +230,10 @@ Dir::Etc::SourceParts \"\";
             [ "${CD_URL_DEBIAN}" ] && CD_URL_CHOSEN="${CD_URL_DEBIAN}" \
             || CD_URL_CHOSEN="https://deb.debian.org/debian"
         ;;
+        "${CD_OS_FEDORA}")
+            [ "${CD_URL_FEDORA}" ] && CD_URL_CHOSEN="${CD_URL_FEDORA}" \
+            || CD_URL_CHOSEN="https://rpmfind.net/linux/fedora/linux/releases"
+        ;;
         "${CD_OS_ROCKY}")
             [ "${CD_URL_ROCKY}" ] && CD_URL_CHOSEN="${CD_URL_ROCKY}" \
             || CD_URL_CHOSEN="https://dl.rockylinux.org/\$contentdir"
@@ -256,6 +270,11 @@ Dir::Etc::SourceParts \"\";
             CD_PYTHON_PACKAGE="python3"
             CD_PYTHON_PACKAGES="/usr/lib/python3/dist-packages"
         ;;
+        "${CD_OS_FEDORA}")
+            CD_PYTHON_COMMAND="python3.12"
+            CD_PYTHON_PACKAGE="python3"
+            CD_PYTHON_PACKAGES="/usr/lib64/python3.12/site-packages"
+        ;;
         "${CD_OS_UBUNTU}")
             case "${CD_OS_VERSION}" in
                 "noble") CD_PYTHON_COMMAND="python3.12" ;;
@@ -634,6 +653,7 @@ CD_OS_ALMA="alma"
 CD_OS_ALPINE="alpine"
 CD_OS_ARCH="arch"
 CD_OS_DEBIAN="debian"
+CD_OS_FEDORA="fedora"
 CD_OS_ROCKY="rocky"
 CD_OS_UBUNTU="ubuntu"
 
diff --git a/readme.md b/readme.md
index 0ec7612..1fbd687 100644
--- a/readme.md
+++ b/readme.md
@@ -37,7 +37,7 @@ from various CA, CI, OCI / OS.
 * [X] Python
   * [X] 3.9 (Debian Bullseye)
   * [X] 3.11 (Alma, Alpine, Debian Bookworm, Rocky, Ubuntu Mantic)
-  * [X] 3.12 (Arch, Ubuntu Noble)
+  * [X] 3.12 (Arch, Fedora, Ubuntu Noble)
 
 ## How
 
@@ -49,6 +49,7 @@ from various CA, CI, OCI / OS.
 | CD_URL_ALPINE | Alpine repository URL   |
 | CD_URL_ARCH   | Arch repository URL     |
 | CD_URL_DEBIAN | Debian repository URL   |
+| CD_URL_FEDORA | Fedora repository URL   |
 | CD_URL_ROCKY  | Rocky repository URL    |
 | CD_URL_UBUNTU | Ubuntu repository URL   |