diff --git a/.github/workflows/build_wheels_linux.yml b/.github/workflows/build_wheels_linux.yml
index 0e202f63..43137e11 100644
--- a/.github/workflows/build_wheels_linux.yml
+++ b/.github/workflows/build_wheels_linux.yml
@@ -3,8 +3,6 @@ name: Linux x86_64
 on:
   pull_request:
     branches:
-      - master
-      - 3.4
       - 4.x
       - 5.x
     paths-ignore:
@@ -27,7 +25,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ['3.7']
+        python-version: ['3.7', '3.9']
         platform: [x64]
         with_contrib: [0, 1]
         without_gui: [0, 1]
@@ -93,7 +91,7 @@ jobs:
       ACTIONS_ALLOW_UNSECURE_COMMANDS: true
       MB_PYTHON_VERSION: ${{ matrix.python-version }}
       NP_TEST_DEP: numpy==1.19.4
-      NP_TEST_DEP_LATEST: numpy==1.26.0
+      NP_TEST_DEP_LATEST: numpy==2.0.0
       CONFIG_PATH: travis_config.sh
       PLAT: x86_64
     steps:
diff --git a/.github/workflows/build_wheels_linux_arm.yml b/.github/workflows/build_wheels_linux_arm.yml
index 4c1fc48e..b6feb358 100644
--- a/.github/workflows/build_wheels_linux_arm.yml
+++ b/.github/workflows/build_wheels_linux_arm.yml
@@ -3,8 +3,6 @@ name: Linux ARM64
 on:
   pull_request:
     branches:
-      - master
-      - 3.4
       - 4.x
       - 5.x
     paths-ignore:
@@ -27,7 +25,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ['3.7']
+        python-version: ['3.7', '3.9']
         platform: [x64]
         with_contrib: [0, 1]
         without_gui: [0, 1]
@@ -94,7 +92,7 @@ jobs:
       MB_PYTHON_VERSION: ${{ matrix.python-version }}
       PLAT: aarch64
       NP_TEST_DEP: numpy==1.19.4
-      NP_TEST_DEP_LATEST: numpy==1.26.0
+      NP_TEST_DEP_LATEST: numpy==2.0.0
       CONFIG_PATH: travis_config.sh
       DOCKER_TEST_IMAGE: multibuild/focal_arm64v8
       UNICODE_WIDTH: 32
diff --git a/.github/workflows/build_wheels_macos.yml b/.github/workflows/build_wheels_macos.yml
index dd3bc654..2a1e52cc 100644
--- a/.github/workflows/build_wheels_macos.yml
+++ b/.github/workflows/build_wheels_macos.yml
@@ -3,8 +3,6 @@ name: macOS x86_64
 on:
   pull_request:
     branches:
-      - master
-      - 3.4
       - 4.x
       - 5.x
     paths-ignore:
@@ -27,7 +25,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ['3.7']
+        python-version: ['3.7', '3.9']
         platform: [x64]
         with_contrib: [0, 1]
         without_gui: [0, 1]
@@ -114,7 +112,7 @@ jobs:
       ACTIONS_ALLOW_UNSECURE_COMMANDS: true
       MB_PYTHON_VERSION: ${{ matrix.python-version }}
       NP_TEST_DEP: numpy==1.19.4
-      NP_TEST_DEP_LATEST: numpy==1.26.0
+      NP_TEST_DEP_LATEST: numpy==2.0.0
       CONFIG_PATH: travis_config.sh
       PLAT: x86_64
       OPENCV_TEST_DATA_PATH: ${{ github.workspace }}/opencv_extra/testdata
diff --git a/.github/workflows/build_wheels_macos_m1.yml b/.github/workflows/build_wheels_macos_m1.yml
index f0e41d3a..48963e88 100644
--- a/.github/workflows/build_wheels_macos_m1.yml
+++ b/.github/workflows/build_wheels_macos_m1.yml
@@ -3,8 +3,6 @@ name: macOS ARM64
 on:
   pull_request:
     branches:
-      - master
-      - 3.4
       - 4.x
       - 5.x
     paths-ignore:
@@ -24,7 +22,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ['3.7']
+        python-version: ['3.7', '3.9']
         platform: [x64]
         with_contrib: [0, 1]
         without_gui: [0, 1]
@@ -34,6 +32,8 @@ jobs:
       SDIST: ${{ matrix.build_sdist || 0 }}
       ENABLE_HEADLESS: ${{ matrix.without_gui }}
       ENABLE_CONTRIB: ${{ matrix.with_contrib }}
+      PYTHON_VERSION: ${{ matrix.python-version }}
+      MACOSX_DEPLOYMENT_TARGET: 11.0
       PIP_INDEX_URL: https://pypi.tuna.tsinghua.edu.cn/simple
     steps:
     - name: Cleanup
@@ -54,9 +54,9 @@ jobs:
         git submodule update --init multibuild
         echo $ENABLE_CONTRIB > contrib.enabled
         echo $ENABLE_HEADLESS > headless.enabled
-        export MACOSX_DEPLOYMENT_TARGET=11.0
         python${{ matrix.python-version }} -m pip install toml && python${{ matrix.python-version }} -c 'import toml; c = toml.load("pyproject.toml"); print("\n".join(c["build-system"]["requires"]))' | python${{ matrix.python-version }} -m pip install -r /dev/stdin
-        python${{ matrix.python-version }} setup.py bdist_wheel --py-limited-api=cp37 --dist-dir=wheelhouse -v
+        export PYTHON_VERSION=${{ matrix.python-version }}
+        python${{ matrix.python-version }} setup.py bdist_wheel --py-limited-api="cp${PYTHON_VERSION//./}" --dist-dir=wheelhouse -v
         delocate-wheel ${{ github.workspace }}/wheelhouse/opencv*
     - name: Saving all wheels
       uses: actions/upload-artifact@v3
diff --git a/.github/workflows/build_wheels_windows.yml b/.github/workflows/build_wheels_windows.yml
index 19470a5d..6780918e 100644
--- a/.github/workflows/build_wheels_windows.yml
+++ b/.github/workflows/build_wheels_windows.yml
@@ -3,8 +3,6 @@ name: Windows x86_64
 on:
   pull_request:
     branches:
-      - master
-      - 3.4
       - 4.x
       - 5.x
     paths-ignore:
@@ -23,7 +21,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ['3.7']
+        python-version: ['3.7', '3.9']
         platform: [x86, x64]
         with_contrib: [0, 1]
         without_gui: [0, 1]
@@ -33,6 +31,7 @@ jobs:
       SDIST: ${{ matrix.build_sdist || 0 }}
       ENABLE_HEADLESS: ${{ matrix.without_gui }}
       ENABLE_CONTRIB: ${{ matrix.with_contrib }}
+      PYTHON_VERSION: ${{ matrix.python-version }}
       OPENCV_TEST_DATA_PATH: ${{ github.workspace }}\opencv_extra\testdata
     steps:
     - name: Cleanup
@@ -67,7 +66,7 @@ jobs:
         python -m pip install --upgrade setuptools
         python -m pip install cmake==3.24.2
         python -m pip install toml && python -c "import toml; c = toml.load('pyproject.toml'); print('\n'.join(c['build-system']['requires']))" >> requirements.txt | python -m pip install -r requirements.txt
-        set "CI_BUILD=1" && python setup.py bdist_wheel --py-limited-api=cp37 --dist-dir=%cd%\wheelhouse -v
+        set "CI_BUILD=1" && python setup.py bdist_wheel --py-limited-api=cp%PYTHON_VERSION:.=% --dist-dir=%cd%\wheelhouse -v
       shell: cmd
     - name: Saving all wheels
       uses: actions/upload-artifact@v3
diff --git a/pyproject.toml b/pyproject.toml
index 7486f132..8c721443 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,13 +4,9 @@ requires = [
   "numpy==1.13.3; python_version=='3.6' and platform_machine != 'aarch64' and platform_machine != 'arm64'",
   "numpy==1.17.0; python_version=='3.7' and platform_machine != 'aarch64' and platform_machine != 'arm64'",
   "numpy==1.17.5; python_version=='3.8' and platform_machine != 'aarch64' and platform_machine != 'arm64'",
-  "numpy==1.19.3; python_version<='3.9' and sys_platform == 'linux' and platform_machine == 'aarch64'",
-  "numpy==1.21.0; python_version<='3.9' and sys_platform == 'darwin' and platform_machine == 'arm64'",
-  "numpy==1.19.3; python_version=='3.9' and platform_machine != 'aarch64' and platform_machine != 'arm64'",
-  "numpy==1.21.2; python_version=='3.10' and platform_system!='Darwin'",
-  "numpy==1.21.4; python_version=='3.10' and platform_system=='Darwin'",
-  "numpy==1.23.5; python_version=='3.11'",
-  "numpy>=1.26.4; python_version>='3.12'",
+  "numpy==1.19.3; python_version<'3.9' and sys_platform == 'linux' and platform_machine == 'aarch64'",
+  "numpy==1.21.0; python_version<'3.9' and sys_platform == 'darwin' and platform_machine == 'arm64'",
+  "numpy==2.0.0;  python_version>='3.9'",
   "pip",
   "scikit-build>=0.14.0",
   "setuptools==59.2.0",
diff --git a/travis_config.sh b/travis_config.sh
index 903ceafb..caa606eb 100644
--- a/travis_config.sh
+++ b/travis_config.sh
@@ -16,7 +16,7 @@ function bdist_wheel_cmd {
     local abs_wheelhouse=$1
     # install all required packages in pyproject.toml, because bdist_wheel does not do it
     python${PYTHON_VERSION} -m pip install toml && python${PYTHON_VERSION} -c 'import toml; c = toml.load("pyproject.toml"); print("\n".join(c["build-system"]["requires"]))' | python${PYTHON_VERSION} -m pip install -r /dev/stdin
-    CI_BUILD=1 python${PYTHON_VERSION} setup.py bdist_wheel --py-limited-api=cp37 -v
+    CI_BUILD=1 python${PYTHON_VERSION} setup.py bdist_wheel --py-limited-api="cp${PYTHON_VERSION//./}" -v
     cp dist/*.whl $abs_wheelhouse
     if [ -z "$IS_OSX" ]; then
       # this path can be changed in the latest manylinux image