diff --git a/.github/workflows/cmake-build.yml b/.github/workflows/cmake-build.yml
index bbae98758..40162b4f1 100644
--- a/.github/workflows/cmake-build.yml
+++ b/.github/workflows/cmake-build.yml
@@ -252,7 +252,7 @@ jobs:
   dpkg:
     strategy:
       matrix:
-        os: [debian12, debian11]
+        os: [debian13, debian11]
         shared: [shared, static]
         boost: [boost, stdfs]
         mpi: [
@@ -285,6 +285,13 @@ jobs:
         run: |
           docker  exec  --user root build  /bin/bash -c "apt-get update && apt-get -y install --no-install-recommends build-essential libhdf5-dev libhdf5-mpi-dev libopenmpi-dev"
       - name: Create Config
+        if: ${{ matrix.os == 'debian13' }}
+        run: |
+          docker  exec  --user root build  /bin/bash -c "chown -R p00user /home/p00user/src"
+          docker  exec build /bin/bash -c "HDF5_STATIC=ON; [ \"${H5CPP_SHARED}\" = \"True\" ] && HDF5_STATIC=OFF; git config --global --add safe.directory /home/p00user/src && mkdir ../build &&  cd ../build &&
+          cmake ../src -DCMAKE_BUILD_TYPE=Release -DH5CPP_CONAN=DISABLE -DHDF5_USE_STATIC_LIBRARIES=${HDF5_STATIC} -DH5CPP_BUILD_SHARED=${H5CPP_SHARED}  -DH5CPP_WITH_BOOST=${H5CPP_WITH_BOOST} -DH5CPP_WITH_MPI=${H5CPP_WITH_MPI}"
+      - name: Create Config (cache2 v2)
+        if: ${{ matrix.os == 'debian11' }}
         run: |
           docker  exec  --user root build  /bin/bash -c "chown -R p00user /home/p00user/src"
           docker  exec build /bin/bash -c "HDF5_STATIC=ON; [ \"${H5CPP_SHARED}\" = \"True\" ] && HDF5_STATIC=OFF; git config --global --add safe.directory /home/p00user/src && mkdir ../build &&  cd ../build &&
@@ -292,7 +299,7 @@ jobs:
       - name: Build all
         run: docker  exec build /bin/bash -c "cd ../build &&  cmake --build . -- -j 2"
       - name: Build html
-        if: (github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/heads/docs_')) && matrix.shared == 'shared' && matrix.boost == 'stdfs' && matrix.mpi == 'serial' && matrix.os == 'debian12'
+        if: (github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/heads/docs_')) && matrix.shared == 'shared' && matrix.boost == 'stdfs' && matrix.mpi == 'serial' && matrix.os == 'debian13'
         run: docker  exec build /bin/bash -c "cd ../build &&  cmake --build . --target html"
       - name: Run tests
         run: docker  exec build /bin/bash -c "cd ../build &&  ctest --extra-verbose --no-tests=error"
@@ -301,7 +308,7 @@ jobs:
       - name: Build examples
         run: docker  exec build /bin/bash -c "mkdir ../examples_build &&  cd ../examples_build && cmake ../src/examples -DCMAKE_BUILD_TYPE=Release  &&  cmake --build . -- -j 2 "
       - name: Append documentation for the latest release version
-        if: startsWith(github.ref, 'refs/heads/master') && matrix.shared == 'shared' && matrix.boost == 'stdfs' && matrix.mpi == 'serial' && matrix.os == 'debian12'
+        if: startsWith(github.ref, 'refs/heads/master') && matrix.shared == 'shared' && matrix.boost == 'stdfs' && matrix.mpi == 'serial' && matrix.os == 'debian13'
         run: |
           docker  exec  --user root build  /bin/bash -c "chown -R p00user /home/p00user/src"
           docker  exec build /bin/bash -c "git config --unset-all remote.origin.fetch"
@@ -318,14 +325,14 @@ jobs:
           docker  exec build /bin/bash -c "rm -rf ./src"
 
       - name: Extract the code version from the branch name
-        if: startsWith(github.ref, 'refs/heads/docs_') && matrix.shared == 'shared' && matrix.boost == 'stdfs' && matrix.mpi == 'serial' && matrix.os == 'debian12'
+        if: startsWith(github.ref, 'refs/heads/docs_') && matrix.shared == 'shared' && matrix.boost == 'stdfs' && matrix.mpi == 'serial' && matrix.os == 'debian13'
         shell: bash
         run: echo "docver=$(echo ${GITHUB_REF#refs/heads/docs_})" >> $GITHUB_OUTPUT
         # run: echo "##[set-output name=docver;]$(echo ${GITHUB_REF#refs/heads/docs_})"
         id: extract_docver
 
       - name: Append documentation for the extracted release version
-        if: startsWith(github.ref, 'refs/heads/docs_') && matrix.shared == 'shared' && matrix.boost == 'stdfs' && matrix.mpi == 'serial' && matrix.os == 'debian12'
+        if: startsWith(github.ref, 'refs/heads/docs_') && matrix.shared == 'shared' && matrix.boost == 'stdfs' && matrix.mpi == 'serial' && matrix.os == 'debian13'
         run: |
           echo Version: ${{ steps.extract_docver.outputs.docver }}
           docker  exec  --user root build  /bin/bash -c "chown -R p00user /home/p00user/src"
@@ -344,7 +351,7 @@ jobs:
           docker  exec build /bin/bash -c "rm -rf ./src"
 
       - name: Deploy documentation
-        if: (github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/heads/docs_')) && matrix.shared == 'shared' && matrix.boost == 'stdfs' && matrix.mpi == 'serial' && matrix.os == 'debian12'
+        if: (github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/heads/docs_')) && matrix.shared == 'shared' && matrix.boost == 'stdfs' && matrix.mpi == 'serial' && matrix.os == 'debian13'
         uses: s0/git-publish-subdir-action@develop
         env:
           REPO: self
diff --git a/.github/workflows/debian13/Dockerfile b/.github/workflows/debian13/Dockerfile
new file mode 100644
index 000000000..9d8f22261
--- /dev/null
+++ b/.github/workflows/debian13/Dockerfile
@@ -0,0 +1,16 @@
+FROM debian:trixie
+
+RUN apt-get update
+RUN apt-get install -y base-passwd apt-utils dialog -y
+RUN echo 'debconf debconf/frontend select Noninteractive' | debconf-set-selections
+RUN apt-get -qq update && apt-get -qq install -y libterm-readline-gnu-perl coreutils gnupg2 procps curl apt-transport-https gnupg2 ca-certificates wget
+RUN apt-get -qq update && apt-get -qq -y dist-upgrade
+RUN apt-get -qq update && apt-get  -y install cmake g++ doxygen python3-sphinx git graphviz texlive doxygen pkg-config texlive-latex-extra texlive-latex-recommended texlive-pictures  python3-pygments lsb-release  python3-breathe texlive-pictures python3-sphinx-rtd-theme libjs-mathjax fonts-mathjax fonts-mathjax-extras ghostscript cmake catch2 libboost-filesystem-dev
+
+RUN apt-get clean
+
+# add p00user
+RUN useradd -rm -d /home/p00user -s /bin/bash p00user
+USER p00user
+RUN mkdir -p /home/p00user/src
+WORKDIR /home/p00user/src
diff --git a/doc/source/users_guide/installing.rst b/doc/source/users_guide/installing.rst
index ebfdf8d15..d0b0d8564 100644
--- a/doc/source/users_guide/installing.rst
+++ b/doc/source/users_guide/installing.rst
@@ -123,11 +123,11 @@ keyring
 The return value of this command line should be `OK`.
 In a next step you have to add new package sources to your system. For this
 purpose go to :file:`/etc/apt/sources.list.d` and download the sources file.
-For Debian (Bookworm) use
+For Debian (Trixie) use
 
 .. code-block:: bash
 
-   $ wget http://repos.pni-hdri.de/bookworm-pni-hdri.list
+   $ wget http://repos.pni-hdri.de/trixie-pni-hdri.list
 
 and for Ubuntu (Noble)
 
@@ -135,7 +135,7 @@ and for Ubuntu (Noble)
 
    $ wget http://repos.pni-hdri.de/noble-pni-hdri.list
 
-Similarly, proceed for Bullseye, Buster, Plucky, Jammy.
+Similarly, proceed for Bookworm, Bullseye, Buster, Plucky, Jammy.
 Once you have downloaded the file use
 
 .. code-block:: bash