diff --git a/.github/workflows/ci-cache-warmup.yml b/.github/workflows/ci-cache-warmup.yml
index 8f33863d04f..6bf9426595b 100644
--- a/.github/workflows/ci-cache-warmup.yml
+++ b/.github/workflows/ci-cache-warmup.yml
@@ -17,7 +17,7 @@ jobs:
         with:
           targets: x86_64-pc-windows-gnu,x86_64-pc-windows-msvc
           components: rust-src
-      - uses: actions/cache/restore@v5
+      - uses: actions/cache/restore@v6
         with:
           # https://github.com/PyO3/maturin/discussions/1953
           path: ~/.cache/cargo-xwin
@@ -28,7 +28,7 @@ jobs:
           sudo apt-get install -y mingw-w64 llvm
           pip install nox
           nox -s test-cross-compilation-windows
-      - uses: actions/cache/save@v5
+      - uses: actions/cache/save@v6
         with:
           path: ~/.cache/cargo-xwin
           key: cargo-xwin-cache
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 058b42b3d7d..ecdd9994f2c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -494,7 +494,7 @@ jobs:
       - uses: actions/setup-node@v6
         with:
           node-version: 24
-      - uses: actions/cache/restore@v5
+      - uses: actions/cache/restore@v6
         id: cache
         with:
           path: |
@@ -508,7 +508,7 @@ jobs:
         run: uvx nox -s build-emscripten
       - name: Test
         run: uvx nox -s test-emscripten
-      - uses: actions/cache/save@v5
+      - uses: actions/cache/save@v6
         if: ${{ github.ref == 'refs/heads/main' || contains(github.event.pull_request.labels.*.name, 'CI-save-pr-cache') }}
         with:
           path: |
@@ -539,7 +539,7 @@ jobs:
           # wasi sdk sets CC variables which break Python's configure script
           # (it also sets WASI_SDK_PATH even without `add-to-path`, which is sufficient)
           add-to-path: false
-      - uses: actions/cache/restore@v5
+      - uses: actions/cache/restore@v6
         id: cache
         with:
           path: |
@@ -553,7 +553,7 @@ jobs:
         run: uvx nox -s build-wasm
       - name: Test
         run: uvx nox -s test-wasm
-      - uses: actions/cache/save@v5
+      - uses: actions/cache/save@v6
         if: ${{ github.ref == 'refs/heads/main' || contains(github.event.pull_request.labels.*.name, 'CI-save-pr-cache') }}
         with:
           path: |
@@ -742,7 +742,7 @@ jobs:
           targets: x86_64-pc-windows-gnu,x86_64-pc-windows-msvc
           components: rust-src
       # load cache (prepared in ci-cache-warmup.yml)
-      - uses: actions/cache/restore@v5
+      - uses: actions/cache/restore@v6
         with:
           path: ~/.cache/cargo-xwin
           key: cargo-xwin-cache
diff --git a/.github/workflows/netlify-build.yml b/.github/workflows/netlify-build.yml
index 42f3cc56dec..0eea2be60b0 100644
--- a/.github/workflows/netlify-build.yml
+++ b/.github/workflows/netlify-build.yml
@@ -39,7 +39,7 @@ jobs:
 
       - name: Restore lychee cache
         id: restore-cache
-        uses: actions/cache/restore@v5
+        uses: actions/cache/restore@v6
         with:
           path: .lycheecache
           key: lychee-${{ github.run_id }}
@@ -56,7 +56,7 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Save lychee cache
-        uses: actions/cache/save@v5
+        uses: actions/cache/save@v6
         if: ${{ github.ref == 'refs/heads/main' || contains(github.event.pull_request.labels.*.name, 'CI-save-pr-cache') }}
         with:
           path: .lycheecache