diff --git a/.github/workflows/ci-gpu.yml b/.github/workflows/ci-gpu.yml
index 4ae1cc5..95ddd97 100644
--- a/.github/workflows/ci-gpu.yml
+++ b/.github/workflows/ci-gpu.yml
@@ -50,11 +50,6 @@ jobs:
         torch-cuda: ["cu128", "cu130"]
     name: "gpu / py${{ matrix.python-version }} / ${{ matrix.torch-cuda }}"
     steps:
-      - name: Setup proxy cache
-        uses: nv-gha-runners/setup-proxy-cache@main
-        with:
-          enable-apt: true
-
       - name: Install system dependencies
         run: |
           export DEBIAN_FRONTEND=noninteractive
@@ -130,11 +125,6 @@ jobs:
         NVIDIA_VISIBLE_DEVICES: ${{ env.NVIDIA_VISIBLE_DEVICES }}
     timeout-minutes: 40
     steps:
-      - name: Setup proxy cache
-        uses: nv-gha-runners/setup-proxy-cache@main
-        with:
-          enable-apt: true
-
       - name: Install system dependencies
         run: |
           export DEBIAN_FRONTEND=noninteractive
@@ -206,11 +196,6 @@ jobs:
         NVIDIA_VISIBLE_DEVICES: ${{ env.NVIDIA_VISIBLE_DEVICES }}
     timeout-minutes: 20
     steps:
-      - name: Setup proxy cache
-        uses: nv-gha-runners/setup-proxy-cache@main
-        with:
-          enable-apt: true
-
       - name: Install system dependencies
         run: |
           export DEBIAN_FRONTEND=noninteractive
@@ -282,11 +267,6 @@ jobs:
         NVIDIA_VISIBLE_DEVICES: ${{ env.NVIDIA_VISIBLE_DEVICES }}
     timeout-minutes: 20
     steps:
-      - name: Setup proxy cache
-        uses: nv-gha-runners/setup-proxy-cache@main
-        with:
-          enable-apt: true
-
       - name: Install system dependencies
         run: |
           export DEBIAN_FRONTEND=noninteractive
diff --git a/.github/workflows/long-running-tests.yml b/.github/workflows/long-running-tests.yml
index 57ab817..a87b653 100644
--- a/.github/workflows/long-running-tests.yml
+++ b/.github/workflows/long-running-tests.yml
@@ -90,11 +90,6 @@ jobs:
         NVIDIA_VISIBLE_DEVICES: ${{ env.NVIDIA_VISIBLE_DEVICES }}
     timeout-minutes: 30
     steps:
-      - name: Setup proxy cache
-        uses: nv-gha-runners/setup-proxy-cache@main
-        with:
-          enable-apt: true
-
       - name: Install system dependencies
         run: |
           export DEBIAN_FRONTEND=noninteractive
@@ -148,11 +143,6 @@ jobs:
         NVIDIA_VISIBLE_DEVICES: ${{ env.NVIDIA_VISIBLE_DEVICES }}
     timeout-minutes: 90
     steps:
-      - name: Setup proxy cache
-        uses: nv-gha-runners/setup-proxy-cache@main
-        with:
-          enable-apt: true
-
       - name: Install system dependencies
         run: |
           export DEBIAN_FRONTEND=noninteractive
@@ -231,11 +221,6 @@ jobs:
         NVIDIA_VISIBLE_DEVICES: ${{ env.NVIDIA_VISIBLE_DEVICES }}
     timeout-minutes: 60
     steps:
-      - name: Setup proxy cache
-        uses: nv-gha-runners/setup-proxy-cache@main
-        with:
-          enable-apt: true
-
       - name: Install system dependencies
         run: |
           export DEBIAN_FRONTEND=noninteractive
@@ -288,11 +273,6 @@ jobs:
         NVIDIA_VISIBLE_DEVICES: ${{ env.NVIDIA_VISIBLE_DEVICES }}
     timeout-minutes: 90
     steps:
-      - name: Setup proxy cache
-        uses: nv-gha-runners/setup-proxy-cache@main
-        with:
-          enable-apt: true
-
       - name: Install system dependencies
         run: |
           export DEBIAN_FRONTEND=noninteractive