diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 90bcf9d..f19971b 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -32,7 +32,7 @@ jobs:
           sudo apt-get install -y ninja-build
 
       - name: Cache Conan downloads
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ~/.conan2
           key: conan-${{ runner.os }}-${{ hashFiles('conanfile.txt') }}
diff --git a/.github/workflows/reusable-docs.yml b/.github/workflows/reusable-docs.yml
index 94d22d2..a2db39c 100644
--- a/.github/workflows/reusable-docs.yml
+++ b/.github/workflows/reusable-docs.yml
@@ -85,7 +85,7 @@ jobs:
     - uses: actions/checkout@v6
       with:
         persist-credentials: false
-    - uses: actions/cache@v4
+    - uses: actions/cache@v5
       with:
         path: ~/.cache/pip
         key: ubuntu-doc-${{ hashFiles('Doc/requirements.txt') }}
diff --git a/.github/workflows/reusable-macos.yml b/.github/workflows/reusable-macos.yml
index 3654b67..5ca56e9 100644
--- a/.github/workflows/reusable-macos.yml
+++ b/.github/workflows/reusable-macos.yml
@@ -37,7 +37,7 @@ jobs:
     - name: Runner image version
       run: echo "IMAGE_OS_VERSION=${ImageOS}-${ImageVersion}" >> "$GITHUB_ENV"
     - name: Restore config.cache
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: config.cache
         key: ${{ github.job }}-${{ env.IMAGE_OS_VERSION }}-${{ inputs.config_hash }}
diff --git a/.github/workflows/reusable-san.yml b/.github/workflows/reusable-san.yml
index 7736f43..50d3ca8 100644
--- a/.github/workflows/reusable-san.yml
+++ b/.github/workflows/reusable-san.yml
@@ -35,7 +35,7 @@ jobs:
     - name: Runner image version
       run: echo "IMAGE_OS_VERSION=${ImageOS}-${ImageVersion}" >> "$GITHUB_ENV"
     - name: Restore config.cache
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: config.cache
         key: ${{ github.job }}-${{ env.IMAGE_OS_VERSION }}-${{ inputs.sanitizer }}-${{ inputs.config_hash }}
diff --git a/.github/workflows/reusable-ubuntu.yml b/.github/workflows/reusable-ubuntu.yml
index a481ac3..4feb966 100644
--- a/.github/workflows/reusable-ubuntu.yml
+++ b/.github/workflows/reusable-ubuntu.yml
@@ -54,7 +54,7 @@ jobs:
         echo "LD_LIBRARY_PATH=${GITHUB_WORKSPACE}/multissl/openssl/${OPENSSL_VER}/lib" >> "$GITHUB_ENV"
     - name: 'Restore OpenSSL build'
       id: cache-openssl
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: ./multissl/openssl/${{ env.OPENSSL_VER }}
         key: ${{ inputs.os }}-multissl-openssl-${{ env.OPENSSL_VER }}
@@ -80,7 +80,7 @@ jobs:
     - name: Runner image version
       run: echo "IMAGE_OS_VERSION=${ImageOS}-${ImageVersion}" >> "$GITHUB_ENV"
     - name: Restore config.cache
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: ${{ env.CPYTHON_BUILDDIR }}/config.cache
         key: ${{ github.job }}-${{ env.IMAGE_OS_VERSION }}-${{ inputs.config_hash }}
diff --git a/.github/workflows/reusable-wasi.yml b/.github/workflows/reusable-wasi.yml
index 09ce616..56b9b2e 100644
--- a/.github/workflows/reusable-wasi.yml
+++ b/.github/workflows/reusable-wasi.yml
@@ -32,7 +32,7 @@ jobs:
         version: ${{ env.WASMTIME_VERSION }}
     - name: "Restore WASI SDK"
       id: cache-wasi-sdk
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: ${{ env.WASI_SDK_PATH }}
         key: ${{ runner.os }}-wasi-sdk-${{ env.WASI_SDK_VERSION }}
@@ -56,7 +56,7 @@ jobs:
     - name: "Runner image version"
       run: echo "IMAGE_OS_VERSION=${ImageOS}-${ImageVersion}" >> "$GITHUB_ENV"
     - name: "Restore Python build config.cache"
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: ${{ env.CROSS_BUILD_PYTHON }}/config.cache
         # Include env.pythonLocation in key to avoid changes in environment when setup-python updates Python.
@@ -68,7 +68,7 @@ jobs:
     - name: "Make build Python"
       run: python3 Tools/wasm/wasi make-build-python
     - name: "Restore host config.cache"
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: ${{ env.CROSS_BUILD_WASI }}/config.cache
         # Should be kept in sync with the other config.cache step above.