diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index bf84005..a8e8002 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -87,6 +87,10 @@ jobs:
             image: ubuntu:22.04
             typ: debian
             allow-failure: false
+          -
+            image: ubuntu:24.04
+            typ: debian
+            allow-failure: false
           -
             image: redhat/ubi8
             typ: rhel
diff --git a/src/Dockerfile b/src/Dockerfile
index aa85ba0..ec57799 100644
--- a/src/Dockerfile
+++ b/src/Dockerfile
@@ -26,15 +26,23 @@ WORKDIR /work
 
 FROM ${TEST_BASE_IMAGE} AS test-base-debian
 ARG APT_MIRROR=deb.debian.org
-RUN --mount=type=cache,target=/pkg-cache \
-    rm -rf /var/cache/apt/archives && \
-    ln -s /pkg-cache /var/cache/apt/archives && \
-    rm /etc/apt/apt.conf.d/docker-clean && \
-    echo 'Binary::apt::APT::Keep-Downloaded-Packages "1";' > /etc/apt/apt.conf.d/keep-downloads && \
-    touch /etc/apt/sources.list && \
-    sed -ri "s/(httpredir|deb).debian.org/${APT_MIRROR:-deb.debian.org}/g" /etc/apt/sources.list && \
-    sed -ri "s/(security).debian.org/${APT_MIRROR:-security.debian.org}/g" /etc/apt/sources.list && \
+RUN --mount=type=cache,target=/pkg-cache <<EOT
+    set -ex
+    rm -rf /var/cache/apt/archives
+    ln -s /pkg-cache /var/cache/apt/archives
+    rm /etc/apt/apt.conf.d/docker-clean
+    echo 'Binary::apt::APT::Keep-Downloaded-Packages "1";' > /etc/apt/apt.conf.d/keep-downloads
+    aptsourcesfile=/etc/apt/sources.list
+    if [ -f /etc/apt/sources.list.d/debian.sources ]; then
+     aptsourcesfile=/etc/apt/sources.list.d/debian.sources
+    elif [ -f /etc/apt/sources.list.d/ubuntu.sources ]; then
+     aptsourcesfile=/etc/apt/sources.list.d/ubuntu.sources
+    fi
+    touch $aptsourcesfile
+    sed -ri "s/(httpredir|deb).debian.org/${APT_MIRROR:-deb.debian.org}/g" $aptsourcesfile
+    sed -ri "s/(security).debian.org/${APT_MIRROR:-security.debian.org}/g" $aptsourcesfile
     apt update && apt install --no-install-recommends -y bats vim
+EOT
 WORKDIR /work
 
 FROM ${TEST_BASE_IMAGE} AS test-base-rhel
diff --git a/src/xx-apt b/src/xx-apt
index 20400e5..4b3e747 100755
--- a/src/xx-apt
+++ b/src/xx-apt
@@ -21,6 +21,16 @@ checkpkg() {
   apt show "$@"
 }
 
+aptsourcesfile() {
+  if [ -f /etc/apt/sources.list.d/debian.sources ]; then
+    echo /etc/apt/sources.list.d/debian.sources
+  elif [ -f /etc/apt/sources.list.d/ubuntu.sources ]; then
+    echo /etc/apt/sources.list.d/ubuntu.sources
+  else
+    echo /etc/apt/sources.list
+  fi
+}
+
 exitnolinux() {
   if [ "${TARGETOS}" != "linux" ]; then
     echo >&2 "skipping packages installation on ${XX_OS}"
@@ -37,7 +47,7 @@ case "${TARGETARCH}" in
   riscv*)
     case "${XX_VENDOR}" in
       debian)
-        if ! grep "sid main" /etc/apt/sources.list >/dev/null; then
+        if ! grep "sid main" "$(aptsourcesfile)" >/dev/null; then
           echo >&2 "skipping packages installation on ${XX_ARCH}. riscv64 currently only supported on sid"
           exit 0
         fi
@@ -64,7 +74,7 @@ fi
 fixubuntusources() {
   # fix all current sources to native arch
   nativearch="$(TARGETPLATFORM="" TARGETPAIR="" TARGETARCH="" TARGETOS="" xx-info arch)"
-  sed -E "/arch=/! s/^(# )?(deb|deb-src) /\1\2 [arch=$nativearch] /" -i /etc/apt/sources.list
+  sed -E "/arch=/! s/^(# )?(deb|deb-src) /\1\2 [arch=$nativearch] /" -i "$(aptsourcesfile)"
 
   if ! xx-info is-cross; then return; fi