diff --git a/.github/workflows/macos-cpu-wheels.yml b/.github/workflows/macos-cpu-wheels.yml
index 5cd97a6..50d8e7c 100644
--- a/.github/workflows/macos-cpu-wheels.yml
+++ b/.github/workflows/macos-cpu-wheels.yml
@@ -84,7 +84,7 @@ jobs:
           ls -lh ./wheelhouse/
 
       - name: Upload Wheel
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: torch-${{ matrix.torch }}-python-${{ matrix.python-version }}-macos-latest-cpu
           path: wheelhouse/*.whl
diff --git a/.github/workflows/run-tests-windows-cpu.yml b/.github/workflows/run-tests-windows-cpu.yml
index 8d33247..d02568c 100644
--- a/.github/workflows/run-tests-windows-cpu.yml
+++ b/.github/workflows/run-tests-windows-cpu.yml
@@ -107,7 +107,7 @@ jobs:
           python3 -c "import kaldifeat; print(kaldifeat.__version__)"
 
       - name: Upload Wheel
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: python-${{ matrix.python-version }}-${{ matrix.os }}-cpu
           path: dist/*.whl
diff --git a/.github/workflows/run-tests-windows-cuda.yml b/.github/workflows/run-tests-windows-cuda.yml
index 9845b56..21cd46e 100644
--- a/.github/workflows/run-tests-windows-cuda.yml
+++ b/.github/workflows/run-tests-windows-cuda.yml
@@ -159,7 +159,7 @@ jobs:
           python3 -c "import kaldifeat; print(kaldifeat.__version__)"
 
       - name: Upload Wheel
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: python-${{ matrix.python-version }}-${{ matrix.os }}-cuda-${{ matrix.cuda }}
           path: dist/*.whl
diff --git a/.github/workflows/ubuntu-cpu-wheels.yml b/.github/workflows/ubuntu-cpu-wheels.yml
index b11c342..dd40dd2 100644
--- a/.github/workflows/ubuntu-cpu-wheels.yml
+++ b/.github/workflows/ubuntu-cpu-wheels.yml
@@ -73,7 +73,7 @@ jobs:
           ls -lh ./wheelhouse/
 
       - name: Upload Wheel
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: torch-${{ matrix.torch }}-python-${{ matrix.python-version }}-ubuntu-latest-cpu
           path: wheelhouse/*.whl
diff --git a/.github/workflows/ubuntu-cuda-wheels.yml b/.github/workflows/ubuntu-cuda-wheels.yml
index 710e37e..bd4c006 100644
--- a/.github/workflows/ubuntu-cuda-wheels.yml
+++ b/.github/workflows/ubuntu-cuda-wheels.yml
@@ -3,7 +3,7 @@ name: build-wheels-cuda-ubuntu
 on:
   push:
     branches:
-      - fix-wheel-2
+      - fix-cuda-12.6
     tags:
       - '*'
   workflow_dispatch:
@@ -75,6 +75,12 @@ jobs:
               python3 --version
               which python3
 
+              ls -lh /opt/python/
+
+              echo "---"
+
+              ls -lh /opt/python/*/bin
+
               pushd /usr/local
               rm cuda
               ln -s cuda-$CUDA_VERSION cuda
@@ -93,7 +99,7 @@ jobs:
           ls -lh ./wheelhouse/
 
       - name: Upload Wheel
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: torch-${{ matrix.torch }}-python-${{ matrix.python-version }}-ubuntu-latest-cuda
           path: wheelhouse/*.whl
diff --git a/.github/workflows/windows-x64-cpu-wheels.yml b/.github/workflows/windows-x64-cpu-wheels.yml
index d2256c6..e9b12e1 100644
--- a/.github/workflows/windows-x64-cpu-wheels.yml
+++ b/.github/workflows/windows-x64-cpu-wheels.yml
@@ -63,7 +63,7 @@ jobs:
           ls -lh ./wheelhouse/
 
       - name: Upload Wheel
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: torch-${{ matrix.torch }}-python-${{ matrix.python-version }}-windows-latest-cpu
           path: wheelhouse/*.whl
diff --git a/scripts/github_actions/build-ubuntu-cuda.sh b/scripts/github_actions/build-ubuntu-cuda.sh
index 5d0ae06..4f2451f 100755
--- a/scripts/github_actions/build-ubuntu-cuda.sh
+++ b/scripts/github_actions/build-ubuntu-cuda.sh
@@ -28,6 +28,7 @@ if [[ $TORCH_VERSION =~ 2.2.* && $CUDA_VERSION =~ 12.* ]]; then
 fi
 
 
+if false; then
 yum -y install openssl-devel bzip2-devel libffi-devel xz-devel wget redhat-lsb-core
 
 
@@ -61,6 +62,8 @@ export LD_LIBRARY_PATH=$PYTHON_INSTALL_DIR/lib:$LD_LIBRARY_PATH
 ls -lh $PYTHON_INSTALL_DIR
 ls -lh $PYTHON_INSTALL_DIR/lib/
 
+fi
+
 python3 --version
 which python3
 
diff --git a/scripts/github_actions/generate_build_matrix.py b/scripts/github_actions/generate_build_matrix.py
index b536158..4994da0 100755
--- a/scripts/github_actions/generate_build_matrix.py
+++ b/scripts/github_actions/generate_build_matrix.py
@@ -288,7 +288,8 @@ def generate_build_matrix(enable_cuda, for_windows, for_macos, test_only_latest_
         "2.6.0": {
             "python-version": ["3.9", "3.10", "3.11", "3.12", "3.13"],
             "cuda": (
-                ["11.8", "12.4", "12.6"]  # default 12.4
+                #  ["11.8", "12.4", "12.6"]  # default 12.4
+                ["12.6"]  # default 12.4
                 if not for_windows
                 else ["11.8.0", "12.4.0", "12.6.0"]
             ),
diff --git a/scripts/github_actions/install_torch.sh b/scripts/github_actions/install_torch.sh
index 80de75a..b0cea34 100755
--- a/scripts/github_actions/install_torch.sh
+++ b/scripts/github_actions/install_torch.sh
@@ -280,4 +280,6 @@ else
   retry python3 -m pip install -q $package -f $url
 fi
 
-rm -rfv ~/.cache/pip
+python3 -m torch.utils.collect_env
+
+rm -rf ~/.cache/pip