diff --git a/.github/ISSUE_TEMPLATE/bug_report.md b/.github/ISSUE_TEMPLATE/bug_report.md
index 15cdcc8..7d8e918 100644
--- a/.github/ISSUE_TEMPLATE/bug_report.md
+++ b/.github/ISSUE_TEMPLATE/bug_report.md
@@ -15,8 +15,8 @@ assignees: ''
 Steps to reproduce the behavior:
 
 1. Go to '...'
-1. Run '....'
-1. See error
+2. Run '....'
+3. See error
 
 <!-- If you have a code sample, error messages, stack traces, please provide it here as well -->
 
diff --git a/.github/workflows/docker-builds.yml b/.github/workflows/docker-builds.yml
index 6e8ed18..4103fa7 100644
--- a/.github/workflows/docker-builds.yml
+++ b/.github/workflows/docker-builds.yml
@@ -17,37 +17,20 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ubuntu_version: ["20.04"]
-        python_version: ["2.7", "3.6", "3.7", "3.8", "3.9"]
+        ubuntu_version: ["22.04"]
+        python_version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
         opencv_version: ["4.10.0"]
         device: ["cpu", "gpu"]
-        cuda_version: ["11.8.0"]
+        cuda_version: ["12.4.1"]
         include:
-          - { ubuntu_version: "22.04", python_version: "3.10", opencv_version: "4.10.0", device: "cpu" }
-          - { ubuntu_version: "22.04", python_version: "3.11", opencv_version: "4.10.0", device: "cpu" }
-          # fixme: python 3.12 install fails due to wring public keys to deadsnakes
-          # - { ubuntu_version: "22.04", python_version: "3.12", opencv_version: "4.10.0", device: "cpu" }
-          - {
-              ubuntu_version: "22.04",
-              python_version: "3.10",
-              opencv_version: "4.10.0",
-              device: "gpu",
-              cuda_version: "12.5.0",
-            }
-          - {
-              ubuntu_version: "22.04",
-              python_version: "3.11",
-              opencv_version: "4.10.0",
-              device: "gpu",
-              cuda_version: "12.5.0",
-            }
-          - {
-              ubuntu_version: "22.04",
-              python_version: "3.12",
-              opencv_version: "4.10.0",
-              device: "gpu",
-              cuda_version: "12.5.0",
-            }
+          - { ubuntu_version: "24.04", python_version: "3.10", opencv_version: "4.10.0", device: "cpu" }
+          - { ubuntu_version: "24.04", python_version: "3.11", opencv_version: "4.10.0", device: "cpu" }
+          #- { ubuntu_version: "24.04", python_version: "3.12", opencv_version: "4.10.0", device: "cpu" }
+          - { ubuntu_version: "24.04", python_version: "3.13", opencv_version: "4.10.0", device: "cpu" }
+          - { ubuntu_version: "24.04", python_version: "3.10", opencv_version: "4.10.0", device: "gpu", cuda_version: "12.8.0" }
+          - { ubuntu_version: "24.04", python_version: "3.11", opencv_version: "4.10.0", device: "gpu", cuda_version: "12.8.0" }
+          #- { ubuntu_version: "24.04", python_version: "3.12", opencv_version: "4.10.0", device: "gpu", cuda_version: "12.8.0" }
+          - { ubuntu_version: "24.04", python_version: "3.13", opencv_version: "4.10.0", device: "gpu", cuda_version: "12.8.0" }
     steps:
       - name: Checkout
         uses: actions/checkout@v4
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index e3f343b..36d301d 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,3 +1,6 @@
+default_language_version:
+  python: python3
+
 ci:
   autofix_prs: true
   autoupdate_commit_msg: "[pre-commit.ci] pre-commit suggestions"
@@ -23,9 +26,10 @@ repos:
       - id: codespell
 
   - repo: https://github.com/executablebooks/mdformat
-    rev: 0.7.16
+    rev: 0.7.17
     hooks:
       - id: mdformat
+        args: ["--number"]
         additional_dependencies:
           - mdformat-gfm
           - mdformat_frontmatter
@@ -41,4 +45,4 @@ repos:
       - id: prettier
         files: \.(json|yml|yaml|toml)
         # https://prettier.io/docs/en/options.html#print-width
-        args: ["--print-width=120"]
+        args: ["--print-width=140"]
diff --git a/README.md b/README.md
index 4a09b32..d59fa75 100644
--- a/README.md
+++ b/README.md
@@ -1,11 +1,11 @@
 # Docker: Python-OpenCV-FFmpeg(-CUDA)
 
-Repository for clean Dockerfile containing [FFmpeg](https://www.ffmpeg.org/), [OpenCV4](https://opencv.org/) and [Python2/3](https://www.python.org/), based on [Ubuntu](https://www.ubuntu.com/) 22.04 LTS.
+Repository for clean Dockerfile containing [FFmpeg](https://www.ffmpeg.org/), [OpenCV4](https://opencv.org/) and [Python3](https://www.python.org/), based on [Ubuntu](https://www.ubuntu.com/) 24.04 LTS.
 
 ## Tags
 
-- `:cpu-pyX.y-cvX.y.z` for Python 2.x/3.x, OpenCV 4.10.x, FFmpeg
-- `:gpu-pyX.y-cvX.y.z` for Python 2.x/3.x, OpenCV 4.10.x, FFmpeg with CUDA 11.4 support
+- `:cpu-pyX.y-cvX.y.z` for Python 3.x, OpenCV 4.10.x, FFmpeg
+- `:gpu-pyX.y-cvX.y.z` for Python 3.x, OpenCV 4.10.x, FFmpeg with CUDA 12.x support
 
 ## Build
 
diff --git a/cpu/Dockerfile b/cpu/Dockerfile
index 3ae91fd..ca8891f 100644
--- a/cpu/Dockerfile
+++ b/cpu/Dockerfile
@@ -18,35 +18,26 @@ ENV DEBIAN_FRONTEND=noninteractive \
 
 
 RUN \
-    # add sources for older pythons
-    apt-get update -q --fix-missing && \
-    apt-get install -y --no-install-recommends software-properties-common && \
-    if [[ "$PYTHON_VERSION" =~ ^(2.7|3.6|3.7|3.12)$ ]]; then \
-        add-apt-repository ppa:deadsnakes/ppa ; \
-    fi && \
+    apt-get update -qq --fix-missing && \
+    apt-get install -y --no-install-recommends \
+        software-properties-common \
+        dirmngr \
+        gnupg && \
+    add-apt-repository ppa:deadsnakes/ppa && \
     apt-add-repository universe && \
     apt-get -y update -qq --fix-missing && \
     apt-get -y install --no-install-recommends \
         python${PYTHON_VERSION} \
         python${PYTHON_VERSION}-dev \
-        $( [ ${PYTHON_VERSION%%.*} -ge 3 ] && echo "python${PYTHON_VERSION}-distutils" ) \
+        $( if [ "${PYTHON_VERSION%%.*}" -eq 3 ] && [ "${PYTHON_VERSION#*.}" -lt 10 ]; then echo "python${PYTHON_VERSION}-distutils"; fi ) \
         curl \
-        wget \
-    && \
+        wget && \
     rm -rf /var/lib/apt/lists/* && \
-
     # Set the default python and install PIP packages
     update-alternatives --install /usr/bin/python${PYTHON_VERSION%%.*} python${PYTHON_VERSION%%.*} /usr/bin/python${PYTHON_VERSION} 1 && \
     update-alternatives --install /usr/bin/python python /usr/bin/python${PYTHON_VERSION} 1 && \
-
-    # install python dependencies
-    # sysctl -w net.ipv4.ip_forward=1 ; \
-    if [[ "$PYTHON_VERSION" == "2.7" || "$PYTHON_VERSION" == "3.6" || "$PYTHON_VERSION" == "3.7" ]]; then \
-        PIP_URL="https://bootstrap.pypa.io/pip/$PYTHON_VERSION/get-pip.py" ; \
-    else \
-        apt-get -y install --no-install-recommends python${PYTHON_VERSION}-distutils ; \
-        PIP_URL="https://bootstrap.pypa.io/get-pip.py" ; \
-    fi && \
+    # install python dependencies \
+    PIP_URL="https://bootstrap.pypa.io/get-pip.py" && \
     curl $PIP_URL | python
 
 ENV PYTHONPATH="/usr/lib/python${PYTHON_VERSION}/site-packages:/usr/local/lib/python${PYTHON_VERSION}/site-packages"
@@ -58,15 +49,12 @@ RUN \
         unzip \
         cmake \
         ffmpeg \
-        $( [ "$UBUNTU_VERSION" = "20.04" ] && libtbb2 || libtbb12 ) \
         gfortran \
         apt-utils \
         pkg-config \
         checkinstall \
         qtbase5-dev qt5-qmake \
         build-essential \
-        libopenblas-base \
-        libopenblas-dev \
         liblapack-dev \
         libatlas-base-dev \
         libavcodec-dev \
@@ -89,21 +77,18 @@ RUN \
         zlib1g-dev \
         libsm6 \
         libxext6 \
-        libxrender1 \
-    && \
+        libxrender1 && \
     pip install numpy && \
-
-# Install OpenCV
+    # Install OpenCV
     wget https://github.com/opencv/opencv/archive/${OPENCV_VERSION}.zip -O opencv.zip --progress=bar:force:noscroll --no-check-certificate && \
     unzip -q opencv.zip && \
-    mv /opencv-${OPENCV_VERSION} /opencv && \
+    mv opencv-${OPENCV_VERSION} /opencv && \
     rm opencv.zip && \
     wget https://github.com/opencv/opencv_contrib/archive/${OPENCV_VERSION}.zip -O opencv_contrib.zip --progress=bar:force:noscroll --no-check-certificate && \
     unzip -q opencv_contrib.zip && \
-    mv /opencv_contrib-${OPENCV_VERSION} /opencv_contrib && \
+    mv opencv_contrib-${OPENCV_VERSION} /opencv_contrib && \
     rm opencv_contrib.zip && \
-
-# Prepare build
+    # Prepare build
     mkdir /opencv/build && \
     cd /opencv/build && \
     cmake \
@@ -114,8 +99,8 @@ RUN \
       -D BUILD_TESTS=OFF \
       -D CMAKE_INSTALL_PREFIX=/usr/local \
       -D OPENCV_EXTRA_MODULES_PATH=/opencv_contrib/modules \
-      -D BUILD_opencv_python3=$( [ ${PYTHON_VERSION%%.*} -ge 3 ] && echo "ON" || echo "OFF" ) \
-      -D BUILD_opencv_python2=$( [ ${PYTHON_VERSION%%.*} -lt 3 ] && echo "ON" || echo "OFF" ) \
+      -D BUILD_opencv_python3=ON \
+      -D BUILD_opencv_python2=OFF \
       -D PYTHON${PYTHON_VERSION%%.*}_EXECUTABLE=$(which python${PYTHON_VERSION}) \
       -D PYTHON_DEFAULT_EXECUTABLE=$(which python${PYTHON_VERSION}) \
       -D BUILD_EXAMPLES=OFF \
@@ -130,16 +115,13 @@ RUN \
       -D WITH_LAPACK=ON \
       #-D WITH_HPX=ON \
       -D ENABLE_PRECOMPILED_HEADERS=OFF \
-      .. \
-    && \
-
-# Build, Test and Install
+      .. && \
+    # Build, Test and Install
     cd /opencv/build && \
     make -j$(nproc) && \
     make install && \
     ldconfig && \
-
-# cleaning
+    # cleaning
     apt-get -y remove \
         unzip \
         cmake \
@@ -148,7 +130,6 @@ RUN \
         pkg-config \
         checkinstall \
         build-essential \
-        libopenblas-dev \
         liblapack-dev \
         libatlas-base-dev \
         libavcodec-dev \
@@ -165,8 +146,7 @@ RUN \
         libglew-dev \
         libpostproc-dev \
         libeigen3-dev \
-        zlib1g-dev \
-    && \
+        zlib1g-dev && \
     apt-get autoremove -y && \
     apt-get clean && \
     rm -rf /opencv /opencv_contrib /var/lib/apt/lists/*
diff --git a/gpu/Dockerfile b/gpu/Dockerfile
index 6243e78..43e329e 100644
--- a/gpu/Dockerfile
+++ b/gpu/Dockerfile
@@ -24,35 +24,26 @@ ENV DEBIAN_FRONTEND=noninteractive \
 # ENV LD_LIBRARY_PATH /usr/local/${CUDA}/compat:$LD_LIBRARY_PATH
 
 RUN \
-    # add sources for older pythons
     apt-get update -qq --fix-missing && \
-    apt-get install -y --no-install-recommends software-properties-common && \
-    if [[ "$PYTHON_VERSION" =~ ^(2.7|3.6|3.7|3.12)$ ]]; then \
-        add-apt-repository ppa:deadsnakes/ppa ; \
-    fi && \
+    apt-get install -y --no-install-recommends \
+        software-properties-common \
+        dirmngr \
+        gnupg && \
+    add-apt-repository ppa:deadsnakes/ppa && \
     apt-add-repository universe && \
     apt-get -y update -qq --fix-missing && \
     apt-get -y install --no-install-recommends \
         python${PYTHON_VERSION} \
         python${PYTHON_VERSION}-dev \
-        $( [ ${PYTHON_VERSION%%.*} -ge 3 ] && echo "python${PYTHON_VERSION}-distutils" ) \
+        $( if [ "${PYTHON_VERSION%%.*}" -eq 3 ] && [ "${PYTHON_VERSION#*.}" -lt 10 ]; then echo "python${PYTHON_VERSION}-distutils"; fi ) \
         curl \
-        wget \
-    && \
+        wget && \
     rm -rf /var/lib/apt/lists/* && \
-
     # Set the default python and install PIP packages
     update-alternatives --install /usr/bin/python${PYTHON_VERSION%%.*} python${PYTHON_VERSION%%.*} /usr/bin/python${PYTHON_VERSION} 1 && \
     update-alternatives --install /usr/bin/python python /usr/bin/python${PYTHON_VERSION} 1 && \
-
     # install python dependencies
-    # sysctl -w net.ipv4.ip_forward=1 ; \
-    if [[ "$PYTHON_VERSION" == "2.7" || "$PYTHON_VERSION" == "3.6" || "$PYTHON_VERSION" == "3.7" ]]; then \
-        PIP_URL="https://bootstrap.pypa.io/pip/$PYTHON_VERSION/get-pip.py" ; \
-    else \
-        apt-get -y install --no-install-recommends python${PYTHON_VERSION}-distutils ; \
-        PIP_URL="https://bootstrap.pypa.io/get-pip.py" ; \
-    fi && \
+    PIP_URL="https://bootstrap.pypa.io/get-pip.py" && \
     curl $PIP_URL | python
 
 ENV PYTHONPATH="/usr/lib/python${PYTHON_VERSION}/site-packages:/usr/local/lib/python${PYTHON_VERSION}/site-packages"
@@ -63,22 +54,18 @@ RUN \
     CUDA=`basename $CUDA_PATH` && \
     echo "$CUDA_PATH/compat" >> /etc/ld.so.conf.d/${CUDA/./-}.conf && \
     ldconfig && \
-
-# Install all dependencies for OpenCV
+    # Install all dependencies for OpenCV
     apt-get -y update -qq --fix-missing && \
     apt-get -y install --no-install-recommends \
         unzip \
         cmake \
         ffmpeg \
-        $( [ "$UBUNTU_VERSION" = "20.04" ] && libtbb2 || libtbb12 ) \
         gfortran \
         apt-utils \
         pkg-config \
         checkinstall \
         qtbase5-dev qt5-qmake \
         build-essential \
-        libopenblas-base \
-        libopenblas-dev \
         liblapack-dev \
         libatlas-base-dev \
         libavcodec-dev \
@@ -104,8 +91,7 @@ RUN \
         libxrender1 \
     && \
     pip install numpy && \
-
-# Install OpenCV
+    # Install OpenCV
     wget https://github.com/opencv/opencv/archive/$OPENCV_VERSION.zip -O opencv.zip --progress=bar:force:noscroll && \
     unzip -q opencv.zip && \
     mv /opencv-$OPENCV_VERSION /opencv && \
@@ -114,8 +100,7 @@ RUN \
     unzip -q opencv_contrib.zip && \
     mv /opencv_contrib-$OPENCV_VERSION /opencv_contrib && \
     rm opencv_contrib.zip && \
-
-# Prepare build
+    # Prepare build
     mkdir /opencv/build && \
     cd /opencv/build && \
     cmake \
@@ -126,8 +111,8 @@ RUN \
       -D BUILD_TESTS=OFF \
       -D CMAKE_INSTALL_PREFIX=/usr/local \
       -D OPENCV_EXTRA_MODULES_PATH=/opencv_contrib/modules \
-      -D BUILD_opencv_python3=$( [ ${PYTHON_VERSION%%.*} -ge 3 ] && echo "ON" || echo "OFF" ) \
-      -D BUILD_opencv_python2=$( [ ${PYTHON_VERSION%%.*} -lt 3 ] && echo "ON" || echo "OFF" ) \
+      -D BUILD_opencv_python3=ON \
+      -D BUILD_opencv_python2=OFF \
       -D PYTHON${PYTHON_VERSION%%.*}_EXECUTABLE=$(which python${PYTHON_VERSION}) \
       -D PYTHON_DEFAULT_EXECUTABLE=$(which python${PYTHON_VERSION}) \
       -D BUILD_EXAMPLES=OFF \
@@ -148,21 +133,19 @@ RUN \
       # https://stackoverflow.com/questions/28010399/build-opencv-with-cuda-support
       -D CUDA_ARCH_BIN="5.3 6.1 7.0 7.5" \
       -D CUDA_ARCH_PTX="" \
-      -D WITH_CUBLAS=ON \
+      #-D WITH_CUBLAS=ON \
       -D WITH_NVCUVID=ON \
       -D ENABLE_FAST_MATH=1 \
       -D CUDA_FAST_MATH=1 \
       -D ENABLE_PRECOMPILED_HEADERS=OFF \
       .. \
     && \
-
-# Build, Test and Install
+   # Build, Test and Install
     cd /opencv/build && \
     make -j$(nproc) && \
     make install && \
     ldconfig && \
-
-# cleaning
+   # cleaning
    apt-get -y remove \
         unzip \
         cmake \
@@ -171,7 +154,6 @@ RUN \
         pkg-config \
         checkinstall \
         build-essential \
-        libopenblas-dev \
         liblapack-dev \
         libatlas-base-dev \
         libavcodec-dev \