diff --git a/.github/workflows/backfill-docs.yml b/.github/workflows/backfill-docs.yml
index 0a77d7d963..e10a0b4a79 100644
--- a/.github/workflows/backfill-docs.yml
+++ b/.github/workflows/backfill-docs.yml
@@ -51,7 +51,7 @@ jobs:
       - name: Setup Python
         uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
-          python-version: '3.14'
+          python-version: '3.15'
           architecture: x64
       - name: Install sphinx dependencies
         shell: bash -l {0}
diff --git a/.github/workflows/conda-package-cf.yml b/.github/workflows/conda-package-cf.yml
index d64ee153c8..2f5d35345d 100644
--- a/.github/workflows/conda-package-cf.yml
+++ b/.github/workflows/conda-package-cf.yml
@@ -34,6 +34,10 @@ jobs:
             python_spec: '3.14.* *_cp314'
           - python: '3.14'
             python_spec: '3.14.* *_cp314t'
+          - python: '3.15'
+            python_spec: '3.15.* *_cp315'
+          - python: '3.15'
+            python_spec: '3.15.* *_cp315t'
     steps:
       - name: Cancel Previous Runs
         uses: styfle/cancel-workflow-action@d07a454dad7609a92316b57b23c9ccfd4f59af66 # 0.13.1
@@ -102,6 +106,10 @@ jobs:
             python_spec: '3.14.* *_cp314'
           - python: '3.14'
             python_spec: '3.14.* *_cp314t'
+          - python: '3.15'
+            python_spec: '3.15.* *_cp315'
+          - python: '3.15'
+            python_spec: '3.15.* *_cp315t'
     steps:
       - name: Cancel Previous Runs
         uses: styfle/cancel-workflow-action@d07a454dad7609a92316b57b23c9ccfd4f59af66 # 0.13.1
@@ -160,10 +168,16 @@ jobs:
         include:
           - python: '3.14'
             python_spec: '3.14.* *_cp314'
-            runner: ubuntu-22.04
+            runner: ubuntu-latest
           - python: '3.14'
             python_spec: '3.14.* *_cp314t'
-            runner: ubuntu-22.04
+            runner: ubuntu-latest
+          - python: '3.15'
+            python_spec: '3.15.* *_cp315'
+            runner: ubuntu-latest
+          - python: '3.15'
+            python_spec: '3.15.* *_cp315t'
+            runner: ubuntu-latest
         runner: [ubuntu-latest]
 
     steps:
@@ -274,6 +288,12 @@ jobs:
           - python: '3.14'
             python_spec: '3.14.* *_cp314t'
             runner: windows-latest
+          - python: '3.15'
+            python_spec: '3.15.* *_cp315'
+            runner: windows-latest
+          - python: '3.15'
+            python_spec: '3.15.* *_cp315t'
+            runner: windows-latest
         runner: [windows-latest]
     env:
       workdir: '${{ github.workspace }}'
diff --git a/.github/workflows/conda-package.yml b/.github/workflows/conda-package.yml
index 3cce876e44..1b104f85e8 100644
--- a/.github/workflows/conda-package.yml
+++ b/.github/workflows/conda-package.yml
@@ -34,6 +34,10 @@ jobs:
             python_spec: '3.14.* *_cp314'
           - python: '3.14'
             python_spec: '3.14.* *_cp314t'
+          - python: '3.15'
+            python_spec: '3.15.* *_cp315'
+          - python: '3.15'
+            python_spec: '3.15.* *_cp315t'
     steps:
       - name: Cancel Previous Runs
         uses: styfle/cancel-workflow-action@d07a454dad7609a92316b57b23c9ccfd4f59af66 # 0.13.1
@@ -112,6 +116,10 @@ jobs:
             python_spec: '3.14.* *_cp314'
           - python: '3.14'
             python_spec: '3.14.* *_cp314t'
+          - python: '3.15'
+            python_spec: '3.15.* *_cp315'
+          - python: '3.15'
+            python_spec: '3.15.* *_cp315t'
     steps:
       - name: Cancel Previous Runs
         uses: styfle/cancel-workflow-action@d07a454dad7609a92316b57b23c9ccfd4f59af66 # 0.13.1
@@ -194,6 +202,14 @@ jobs:
             python_spec: '3.14.* *_cp314t'
             experimental: false
             runner: ubuntu-latest
+          - python: '3.15'
+            python_spec: '3.15.* *_cp315'
+            experimental: false
+            runner: ubuntu-latest
+          - python: '3.15'
+            python_spec: '3.15.* *_cp315t'
+            experimental: false
+            runner: ubuntu-latest
         experimental: [false]
         runner: [ubuntu-latest]
     continue-on-error: ${{ matrix.experimental }}
@@ -313,6 +329,14 @@ jobs:
             python_spec: '3.14.* *_cp314t'
             experimental: false
             runner: windows-latest
+          - python: '3.15'
+            python_spec: '3.15.* *_cp315'
+            experimental: false
+            runner: windows-latest
+          - python: '3.15'
+            python_spec: '3.15.* *_cp315t'
+            experimental: false
+            runner: windows-latest
         experimental: [false]
         runner: [windows-latest]
     continue-on-error: ${{ matrix.experimental }}
@@ -502,6 +526,10 @@ jobs:
             python_spec: '3.14.* *_cp314'
           - python: '3.14'
             python_spec: '3.14.* *_cp314t'
+          - python: '3.15'
+            python_spec: '3.15.* *_cp315'
+          - python: '3.15'
+            python_spec: '3.15.* *_cp315t'
     steps:
       - name: Download conda artifact
         uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
@@ -551,6 +579,10 @@ jobs:
             python_spec: '3.14.* *_cp314'
           - python: '3.14'
             python_spec: '3.14.* *_cp314t'
+          - python: '3.15'
+            python_spec: '3.15.* *_cp315'
+          - python: '3.15'
+            python_spec: '3.15.* *_cp315t'
     steps:
       - name: Download artifact
         uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
@@ -591,13 +623,13 @@ jobs:
     runs-on: ${{ matrix.runner }}
     strategy:
       matrix:
-        python: ['3.14']
-        python_spec: ['3.14.* *_cp314']
+        python: ['3.15']
+        python_spec: ['3.15.* *_cp315']
         experimental: [false]
         runner: [ubuntu-latest]
         include:
-          - python: '3.14'
-            python_spec: '3.14.* *_cp314t'
+          - python: '3.15'
+            python_spec: '3.15.* *_cp315t'
             experimental: false
             runner: ubuntu-latest
     continue-on-error: ${{ matrix.experimental }}
diff --git a/.github/workflows/generate-coverage.yaml b/.github/workflows/generate-coverage.yaml
index 72da636288..1bcbbe31d1 100644
--- a/.github/workflows/generate-coverage.yaml
+++ b/.github/workflows/generate-coverage.yaml
@@ -52,7 +52,7 @@ jobs:
       - name: Setup Python
         uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
-          python-version: '3.14'
+          python-version: '3.15'
           architecture: x64
 
       - name: Cache Gtest
diff --git a/.github/workflows/generate-docs.yml b/.github/workflows/generate-docs.yml
index 1a7efad084..3aaa60a9e0 100644
--- a/.github/workflows/generate-docs.yml
+++ b/.github/workflows/generate-docs.yml
@@ -53,7 +53,7 @@ jobs:
         if: ${{ !github.event.pull_request || github.event.action != 'closed' }}
         uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
-          python-version: '3.10'
+          python-version: '3.15'
           architecture: x64
       - name: Install sphinx dependencies
         if: ${{ !github.event.pull_request || github.event.action != 'closed' }}
diff --git a/.github/workflows/os-llvm-sycl-build.yml b/.github/workflows/os-llvm-sycl-build.yml
index 9fb6f3a295..3fcdc1ffed 100644
--- a/.github/workflows/os-llvm-sycl-build.yml
+++ b/.github/workflows/os-llvm-sycl-build.yml
@@ -118,7 +118,7 @@ jobs:
       - name: Setup Python
         uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
-          python-version: '3.12'
+          python-version: '3.15'
           architecture: x64
 
       - name: Install dpctl dependencies
diff --git a/.github/workflows/pre-commit.yml b/.github/workflows/pre-commit.yml
index 090c8bc614..f2c9111a71 100644
--- a/.github/workflows/pre-commit.yml
+++ b/.github/workflows/pre-commit.yml
@@ -23,7 +23,7 @@ jobs:
         ref: ${{ github.sha }}  # use hash to pass no-commit-to-branch check
     - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
       with:
-        python-version: '3.14'
+        python-version: '3.15'
     - name: Install from PyPI
       shell: bash -l {0}
       run: |
diff --git a/.github/workflows/run-tests-from-dppy-bits.yaml b/.github/workflows/run-tests-from-dppy-bits.yaml
index 676f4a7e7c..f142c45233 100644
--- a/.github/workflows/run-tests-from-dppy-bits.yaml
+++ b/.github/workflows/run-tests-from-dppy-bits.yaml
@@ -28,7 +28,7 @@ jobs:
     strategy:
       matrix:
         dependencies: [conda-forge, intel]
-        python_spec: ['3.10', '3.11', '3.12', '3.13', '3.14.* *_cp314', '3.14.* *_cp314t']
+        python_spec: ['3.10', '3.11', '3.12', '3.13', '3.14.* *_cp314', '3.14.* *_cp314t', '3.15.* *_cp315', '3.15.* *_cp315t']
         runner: [ubuntu-22.04, ubuntu-24.04]
 
     steps:
@@ -87,7 +87,7 @@ jobs:
       matrix:
         # see the comment on the dependencies of test_linux
         dependencies: [conda-forge, intel]
-        python_spec: ['3.10', '3.11', '3.12', '3.13', '3.14.* *_cp314', '3.14.* *_cp314t']
+        python_spec: ['3.10', '3.11', '3.12', '3.13', '3.14.* *_cp314', '3.14.* *_cp314t', '3.15.* *_cp315', '3.15.* *_cp315t']
         runner: [windows-latest]
     env:
       workdir: '${{ github.workspace }}'
diff --git a/pyproject.toml b/pyproject.toml
index b1d88ddcfc..bea30b1d03 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,6 +28,7 @@ classifiers = [
   "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: 3.13",
   "Programming Language :: Python :: 3.14",
+  "Programming Language :: Python :: 3.15",
   "Programming Language :: Python :: Implementation :: CPython",
   "Programming Language :: Python :: Free Threading :: 2 - Beta",
   "Topic :: Software Development",