diff --git a/.github/workflows/build_wheels_macos.yml b/.github/workflows/build_wheels_macos.yml
index c52bfe34..06ab6c00 100644
--- a/.github/workflows/build_wheels_macos.yml
+++ b/.github/workflows/build_wheels_macos.yml
@@ -83,7 +83,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ['3.10', '3.11', '3.12', '3.13', '3.14']
+        python-version: ['3.10', '3.11', '3.12', '3.13', '3.14', '3.15']
         platform: [x86_64, arm64]
         with_contrib: [0, 1]
         without_gui: [0, 1]
@@ -96,6 +96,7 @@ jobs:
       OPENCV_TEST_DATA_PATH: ${{ github.workspace }}/opencv_extra/testdata
       PYLINT_TEST_FILE: ${{ github.workspace }}/opencv/samples/python/squares.py
       PIP_INDEX_URL: https://pypi.tuna.tsinghua.edu.cn/simple
+      OPENCV_SAMPLES_DATA_PATH: ${{ github.workspace }}/opencv/samples/data/
     steps:
     - uses: actions/setup-python@v7
       with:
diff --git a/.github/workflows/build_wheels_manylinux.yml b/.github/workflows/build_wheels_manylinux.yml
index d614c28a..908ca7cd 100644
--- a/.github/workflows/build_wheels_manylinux.yml
+++ b/.github/workflows/build_wheels_manylinux.yml
@@ -111,7 +111,6 @@ jobs:
       SDIST: ${{ matrix.build_sdist || 0 }}
       ENABLE_HEADLESS: ${{ matrix.without_gui }}
       ENABLE_CONTRIB: ${{ matrix.with_contrib }}
-      DOCKER_TEST_IMAGE: ${{ matrix.platform == 'aarch64' && 'quay.io/opencv-ci/multibuild-noble_arm64v8:2026-06-15' || '' }}
     steps:
     - name: Cleanup
       run: find . -mindepth 1 -delete
diff --git a/.github/workflows/build_wheels_windows.yml b/.github/workflows/build_wheels_windows.yml
index 81098be0..b9aecb72 100644
--- a/.github/workflows/build_wheels_windows.yml
+++ b/.github/workflows/build_wheels_windows.yml
@@ -84,7 +84,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
+        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12', '3.13', '3.14', '3.15']
         platform: [x86, x64]
         with_contrib: [0, 1]
         without_gui: [0, 1]
diff --git a/opencv b/opencv
index 40738fb1..e4f78fbc 160000
--- a/opencv
+++ b/opencv
@@ -1 +1 @@
-Subproject commit 40738fb16ceddb5fb3fea747585f7ce6abb0605b
+Subproject commit e4f78fbcf1a773fbed69e14500e8b734963eb585
diff --git a/opencv_contrib b/opencv_contrib
index 755e5067..b67a8551 160000
--- a/opencv_contrib
+++ b/opencv_contrib
@@ -1 +1 @@
-Subproject commit 755e50675d97db9b7d449d8bd6b09888646f6c6e
+Subproject commit b67a855188a3d683813731010f6d39ac614733a4
diff --git a/opencv_extra b/opencv_extra
index 3becd947..c9608cf1 160000
--- a/opencv_extra
+++ b/opencv_extra
@@ -1 +1 @@
-Subproject commit 3becd947dd6bf6340047de8ca4445a70271e6073
+Subproject commit c9608cf1253af28797bca7550846d13c7db81de7
diff --git a/setup.py b/setup.py
index a6f10ffb..29e22e32 100755
--- a/setup.py
+++ b/setup.py
@@ -307,6 +307,7 @@ def main():
             "Programming Language :: Python :: 3.12",
             "Programming Language :: Python :: 3.13",
             "Programming Language :: Python :: 3.14",
+            "Programming Language :: Python :: 3.15",
             "Programming Language :: C++",
             "Programming Language :: Python :: Implementation :: CPython",
             "Topic :: Scientific/Engineering",
diff --git a/travis_config.sh b/travis_config.sh
index 7504f4b2..4668e60f 100644
--- a/travis_config.sh
+++ b/travis_config.sh
@@ -152,6 +152,7 @@ function run_tests {
 
     cd /io/opencv
     export OPENCV_TEST_DATA_PATH=/io/opencv_extra/testdata
+    export OPENCV_SAMPLES_DATA_PATH=/io/opencv/samples/data
 
     test_wheels
     pylint_test