diff --git a/.github/workflows/build-wheels-m1.yml b/.github/workflows/build-wheels-m1.yml
index 5b6dc8670a..a09d7e1e4c 100644
--- a/.github/workflows/build-wheels-m1.yml
+++ b/.github/workflows/build-wheels-m1.yml
@@ -23,12 +23,12 @@ permissions:
 
 jobs:
   generate-matrix:
-    uses: pytorch/test-infra/.github/workflows/generate_binary_build_matrix.yml@main
+    uses: pytorch/test-infra/.github/workflows/generate_binary_build_matrix.yml@release/2.9
     with:
       package-type: wheel
       os: macos-arm64
       test-infra-repository: pytorch/test-infra
-      test-infra-ref: main
+      test-infra-ref: release/2.9
   build:
     needs: generate-matrix
     strategy:
@@ -39,12 +39,12 @@ jobs:
             smoke-test-script: test/smoke_test/smoke_test_no_ffmpeg.py
             package-name: torchaudio
     name: ${{ matrix.repository }}
-    uses: pytorch/test-infra/.github/workflows/build_wheels_macos.yml@main
+    uses: pytorch/test-infra/.github/workflows/build_wheels_macos.yml@release/2.9
     with:
       repository: ${{ matrix.repository }}
       ref: ""
       test-infra-repository: pytorch/test-infra
-      test-infra-ref: main
+      test-infra-ref: release/2.9
       build-matrix: ${{ needs.generate-matrix.outputs.matrix }}
       smoke-test-script: ${{ matrix.smoke-test-script }}
       runner-type: macos-m1-stable
diff --git a/.github/workflows/build_wheels_aarch64_linux.yml b/.github/workflows/build_wheels_aarch64_linux.yml
index 23501c8125..16da1868a8 100644
--- a/.github/workflows/build_wheels_aarch64_linux.yml
+++ b/.github/workflows/build_wheels_aarch64_linux.yml
@@ -23,12 +23,12 @@ permissions:
 
 jobs:
   generate-matrix:
-    uses: pytorch/test-infra/.github/workflows/generate_binary_build_matrix.yml@main
+    uses: pytorch/test-infra/.github/workflows/generate_binary_build_matrix.yml@release/2.9
     with:
       package-type: wheel
       os: linux-aarch64
       test-infra-repository: pytorch/test-infra
-      test-infra-ref: main
+      test-infra-ref: release/2.9
       with-cuda: enable
   build:
     needs: generate-matrix
@@ -40,12 +40,12 @@ jobs:
             smoke-test-script: test/smoke_test/smoke_test.py
             package-name: torchaudio
     name: ${{ matrix.repository }}
-    uses: pytorch/test-infra/.github/workflows/build_wheels_linux.yml@main
+    uses: pytorch/test-infra/.github/workflows/build_wheels_linux.yml@release/2.9
     with:
       repository: ${{ matrix.repository }}
       ref: ""
       test-infra-repository: pytorch/test-infra
-      test-infra-ref: main
+      test-infra-ref: release/2.9
       build-matrix: ${{ needs.generate-matrix.outputs.matrix }}
       pre-script: ${{ matrix.pre-script }}
       post-script: ${{ matrix.post-script }}
diff --git a/.github/workflows/build_wheels_linux.yml b/.github/workflows/build_wheels_linux.yml
index 934b709bb3..f667eda393 100644
--- a/.github/workflows/build_wheels_linux.yml
+++ b/.github/workflows/build_wheels_linux.yml
@@ -23,12 +23,12 @@ permissions:
 
 jobs:
   generate-matrix:
-    uses: pytorch/test-infra/.github/workflows/generate_binary_build_matrix.yml@main
+    uses: pytorch/test-infra/.github/workflows/generate_binary_build_matrix.yml@release/2.9
     with:
       package-type: wheel
       os: linux
       test-infra-repository: pytorch/test-infra
-      test-infra-ref: main
+      test-infra-ref: release/2.9
       with-xpu: enable
   build:
     needs: generate-matrix
@@ -40,12 +40,12 @@ jobs:
             smoke-test-script: test/smoke_test/smoke_test_no_ffmpeg.py
             package-name: torchaudio
     name: ${{ matrix.repository }}
-    uses: pytorch/test-infra/.github/workflows/build_wheels_linux.yml@main
+    uses: pytorch/test-infra/.github/workflows/build_wheels_linux.yml@release/2.9
     with:
       repository: ${{ matrix.repository }}
       ref: ""
       test-infra-repository: pytorch/test-infra
-      test-infra-ref: main
+      test-infra-ref: release/2.9
       build-matrix: ${{ needs.generate-matrix.outputs.matrix }}
       smoke-test-script: ${{ matrix.smoke-test-script }}
       package-name: ${{ matrix.package-name }}
diff --git a/.github/workflows/build_wheels_windows.yml b/.github/workflows/build_wheels_windows.yml
index 82d03ea639..24706d9d88 100644
--- a/.github/workflows/build_wheels_windows.yml
+++ b/.github/workflows/build_wheels_windows.yml
@@ -19,12 +19,12 @@ permissions:
 
 jobs:
   generate-matrix:
-    uses: pytorch/test-infra/.github/workflows/generate_binary_build_matrix.yml@main
+    uses: pytorch/test-infra/.github/workflows/generate_binary_build_matrix.yml@release/2.9
     with:
       package-type: wheel
       os: windows
       test-infra-repository: pytorch/test-infra
-      test-infra-ref: main
+      test-infra-ref: release/2.9
       with-xpu: enable
   build:
     needs: generate-matrix
@@ -38,12 +38,12 @@ jobs:
             smoke-test-script: test/smoke_test/smoke_test_no_ffmpeg.py
             package-name: torchaudio
     name: ${{ matrix.repository }}
-    uses: pytorch/test-infra/.github/workflows/build_wheels_windows.yml@main
+    uses: pytorch/test-infra/.github/workflows/build_wheels_windows.yml@release/2.9
     with:
       repository: ${{ matrix.repository }}
       ref: ""
       test-infra-repository: pytorch/test-infra
-      test-infra-ref: main
+      test-infra-ref: release/2.9
       build-matrix: ${{ needs.generate-matrix.outputs.matrix }}
       env-script: ${{ matrix.env-script }}
       package-name: ${{ matrix.package-name }}
diff --git a/.github/workflows/docs.yaml b/.github/workflows/docs.yaml
index 26bcbf8083..82955da916 100644
--- a/.github/workflows/docs.yaml
+++ b/.github/workflows/docs.yaml
@@ -57,7 +57,8 @@ jobs:
         echo "::group::Install PyTorch and TorchCodec"
         PYTORCH_WHEEL_INDEX="https://download.pytorch.org/whl/${UPLOAD_CHANNEL}/cu${CU_VERSION_WITHOUT_PERIODS}"
         python -m pip install numpy
-        python -m pip install --pre torch torchcodec --index-url="${PYTORCH_WHEEL_INDEX}"
+        python -m pip install --pre torch --index-url="${PYTORCH_WHEEL_INDEX}"
+        python -m pip install --pre torchcodec --index-url="https://download.pytorch.org/whl/nightly/cu${CU_VERSION_WITHOUT_PERIODS}"
         python -c 'import torch; print(f"{torch.__version__}"); print(f"{torch.__file__}"); print(f"{torch.cuda.is_available()=}")'
         echo "::endgroup::"
 
diff --git a/.github/workflows/ffmpeg.yml b/.github/workflows/ffmpeg.yml
index 1d589c07f7..736c20fe35 100644
--- a/.github/workflows/ffmpeg.yml
+++ b/.github/workflows/ffmpeg.yml
@@ -18,7 +18,7 @@ jobs:
       fail-fast: false
       matrix:
         ffmpeg_version: ["4.4.4", "5.1.4", "6.1.1", "master"]
-    uses: pytorch/test-infra/.github/workflows/linux_job_v2.yml@main
+    uses: pytorch/test-infra/.github/workflows/linux_job_v2.yml@release/2.9
     permissions:
       id-token: write
       contents: read
@@ -42,7 +42,7 @@ jobs:
       fail-fast: false
       matrix:
         ffmpeg_version: ["4.4.4", "5.1.4", "6.1.1", "master"]
-    uses: pytorch/test-infra/.github/workflows/linux_job_v2.yml@main
+    uses: pytorch/test-infra/.github/workflows/linux_job_v2.yml@release/2.9
     permissions:
       id-token: write
       contents: read
@@ -69,7 +69,7 @@ jobs:
       matrix:
         ffmpeg_version: ["4.4.4", "5.1.4", "6.1.1", "master"]
         runner: ["macos-m1-stable", "macos-12"]
-    uses: pytorch/test-infra/.github/workflows/macos_job.yml@main
+    uses: pytorch/test-infra/.github/workflows/macos_job.yml@release/2.9
     with:
       job-name: Build
       upload-artifact: ffmpeg-lgpl
@@ -91,7 +91,7 @@ jobs:
       fail-fast: false
       matrix:
         ffmpeg_version: ["4.4.4", "5.1.4", "6.1.1", "master"]
-    uses: pytorch/test-infra/.github/workflows/windows_job.yml@main
+    uses: pytorch/test-infra/.github/workflows/windows_job.yml@release/2.9
     with:
       job-name: Build
       upload-artifact: ffmpeg-lgpl
diff --git a/.github/workflows/unittest-linux-cpu.yml b/.github/workflows/unittest-linux-cpu.yml
index ea0ac854fa..1b05b2b26d 100644
--- a/.github/workflows/unittest-linux-cpu.yml
+++ b/.github/workflows/unittest-linux-cpu.yml
@@ -16,7 +16,7 @@ jobs:
         python-version: ["3.11"]
         ffmpeg-version: ["7"]
       fail-fast: false
-    uses: pytorch/test-infra/.github/workflows/linux_job_v2.yml@main
+    uses: pytorch/test-infra/.github/workflows/linux_job_v2.yml@release/2.9
     permissions:
       id-token: write
       contents: read
@@ -62,7 +62,8 @@ jobs:
 
         echo "::group::Install PyTorch and TorchCodec"
         PYTORCH_WHEEL_INDEX="https://download.pytorch.org/whl/${UPLOAD_CHANNEL}/cpu"
-        python -m pip install --pre torch torchcodec --index-url="${PYTORCH_WHEEL_INDEX}"
+        python -m pip install --pre torch --index-url="${PYTORCH_WHEEL_INDEX}"
+        python -m pip install --pre torchcodec --index-url="https://download.pytorch.org/whl/nightly/cpu"
         python -c 'import torch; print(f"{torch.__version__}"); print(f"{torch.__file__}")'
         python -c 'import torchcodec; print(f"{torchcodec.__version__}"); print(f"{torchcodec.__file__}")'
         echo "::endgroup::"
diff --git a/.github/workflows/unittest-linux-gpu.yml b/.github/workflows/unittest-linux-gpu.yml
index 91b79f5b47..690afc3f99 100644
--- a/.github/workflows/unittest-linux-gpu.yml
+++ b/.github/workflows/unittest-linux-gpu.yml
@@ -17,7 +17,7 @@ jobs:
         python_version: ["3.10"]
         cuda_arch_version: ["12.6"]
       fail-fast: false
-    uses: pytorch/test-infra/.github/workflows/linux_job_v2.yml@main
+    uses: pytorch/test-infra/.github/workflows/linux_job_v2.yml@release/2.9
     permissions:
       id-token: write
       contents: read
@@ -63,7 +63,8 @@ jobs:
         echo "::group::Install PyTorch"
         export GPU_ARCH_ID="cu126"  # TODO this is currently hardcoded, should depend on matrix's value.
         PYTORCH_WHEEL_INDEX="https://download.pytorch.org/whl/${UPLOAD_CHANNEL}/${GPU_ARCH_ID}"
-        pip install --progress-bar=off --pre torch torchcodec --index-url="${PYTORCH_WHEEL_INDEX}"
+        pip install --progress-bar=off --pre torch --index-url="${PYTORCH_WHEEL_INDEX}"
+        pip install --progress-bar=off --pre torchcodec --index-url="https://download.pytorch.org/whl/nightly/${GPU_ARCH_ID}"
         echo "::endgroup::"
 
         echo "::group::Install TorchAudio"
diff --git a/.github/workflows/unittest-macos-cpu.yml b/.github/workflows/unittest-macos-cpu.yml
index 1e7c52833f..b5cc292bef 100644
--- a/.github/workflows/unittest-macos-cpu.yml
+++ b/.github/workflows/unittest-macos-cpu.yml
@@ -14,7 +14,7 @@ env:
 
 jobs:
   tests:
-    uses: pytorch/test-infra/.github/workflows/macos_job.yml@main
+    uses: pytorch/test-infra/.github/workflows/macos_job.yml@release/2.9
     with:
       runner: macos-m1-stable
       repository: pytorch/audio
diff --git a/.github/workflows/unittest-windows-cpu.yml b/.github/workflows/unittest-windows-cpu.yml
index f6a786fcc1..1574dec2b9 100644
--- a/.github/workflows/unittest-windows-cpu.yml
+++ b/.github/workflows/unittest-windows-cpu.yml
@@ -11,7 +11,7 @@ on:
 
 jobs:
   unittests-windows-cpu:
-    uses: pytorch/test-infra/.github/workflows/windows_job.yml@main
+    uses: pytorch/test-infra/.github/workflows/windows_job.yml@release/2.9
     with:
       repository: pytorch/audio
       runner: windows.4xlarge
diff --git a/.github/workflows/unittest-windows-gpu.yml b/.github/workflows/unittest-windows-gpu.yml
index b00a512956..0da8fbfea0 100644
--- a/.github/workflows/unittest-windows-gpu.yml
+++ b/.github/workflows/unittest-windows-gpu.yml
@@ -11,7 +11,7 @@ on:
 
 jobs:
   unittests-windows-gpu:
-    uses: pytorch/test-infra/.github/workflows/windows_job.yml@main
+    uses: pytorch/test-infra/.github/workflows/windows_job.yml@release/2.9
     with:
       repository: pytorch/audio
       runner: windows.g5.4xlarge.nvidia.gpu
diff --git a/version.txt b/version.txt
index 11922a5ce1..c8e38b6140 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-2.8.0a0
+2.9.0