diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 05a2382f..705f3150 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -151,7 +151,7 @@ jobs:
       - name: Runner image version
         run: echo "IMAGE_VERSION=${ImageVersion}" >> $GITHUB_ENV
       - name: Restore config.cache
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: config.cache
           # Include env.pythonLocation in key to avoid changes in environment when setup-python updates Python
@@ -314,7 +314,7 @@ jobs:
     - name: Runner image version
       run: echo "IMAGE_VERSION=${ImageVersion}" >> $GITHUB_ENV
     - name: Restore config.cache
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: config.cache
         key: ${{ github.job }}-${{ runner.os }}-${{ env.IMAGE_VERSION }}-${{ needs.check_source.outputs.config_hash }}
@@ -329,7 +329,7 @@ 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: ${{ matrix.os }}-multissl-openssl-${{ env.OPENSSL_VER }}
@@ -384,7 +384,7 @@ 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: ${{ runner.os }}-multissl-openssl-${{ env.OPENSSL_VER }}
@@ -409,7 +409,7 @@ jobs:
     - name: Runner image version
       run: echo "IMAGE_VERSION=${ImageVersion}" >> $GITHUB_ENV
     - name: Restore config.cache
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: ${{ env.CPYTHON_BUILDDIR }}/config.cache
         key: ${{ github.job }}-${{ runner.os }}-${{ env.IMAGE_VERSION }}-${{ needs.check_source.outputs.config_hash }}
@@ -442,7 +442,7 @@ jobs:
         ./python -m venv $VENV_LOC && $VENV_PYTHON -m pip install -r ${GITHUB_WORKSPACE}/Tools/requirements-hypothesis.txt
     - name: 'Restore Hypothesis database'
       id: cache-hypothesis-database
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: ./hypothesis
         key: hypothesis-database-${{ github.head_ref || github.run_id }}
@@ -495,7 +495,7 @@ jobs:
     - name: Runner image version
       run: echo "IMAGE_VERSION=${ImageVersion}" >> $GITHUB_ENV
     - name: Restore config.cache
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: config.cache
         key: ${{ github.job }}-${{ runner.os }}-${{ env.IMAGE_VERSION }}-${{ needs.check_source.outputs.config_hash }}
@@ -514,7 +514,7 @@ 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: ${{ matrix.os }}-multissl-openssl-${{ env.OPENSSL_VER }}
diff --git a/.github/workflows/reusable-docs.yml b/.github/workflows/reusable-docs.yml
index 6738acc9..f6b49677 100644
--- a/.github/workflows/reusable-docs.yml
+++ b/.github/workflows/reusable-docs.yml
@@ -85,7 +85,7 @@ jobs:
     - uses: actions/checkout@v4
       with:
         persist-credentials: false
-    - uses: actions/cache@v4
+    - uses: actions/cache@v5
       with:
         path: ~/.cache/pip
         key: ubuntu-doc-${{ hashFiles('Doc/requirements.txt') }}
diff --git a/.github/workflows/reusable-macos.yml b/.github/workflows/reusable-macos.yml
index 6828c0ba..01b505a2 100644
--- a/.github/workflows/reusable-macos.yml
+++ b/.github/workflows/reusable-macos.yml
@@ -37,7 +37,7 @@ jobs:
     - name: Runner image version
       run: echo "IMAGE_VERSION=${ImageVersion}" >> $GITHUB_ENV
     - name: Restore config.cache
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: config.cache
         key: ${{ github.job }}-${{ inputs.os }}-${{ env.IMAGE_VERSION }}-${{ inputs.config_hash }}
diff --git a/.github/workflows/reusable-tsan.yml b/.github/workflows/reusable-tsan.yml
index 47a63be3..2293a844 100644
--- a/.github/workflows/reusable-tsan.yml
+++ b/.github/workflows/reusable-tsan.yml
@@ -36,7 +36,7 @@ jobs:
     - name: Runner image version
       run: echo "IMAGE_VERSION=${ImageVersion}" >> $GITHUB_ENV
     - name: Restore config.cache
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: config.cache
         key: ${{ github.job }}-${{ runner.os }}-${{ env.IMAGE_VERSION }}-${{ inputs.config_hash }}
diff --git a/.github/workflows/reusable-ubuntu.yml b/.github/workflows/reusable-ubuntu.yml
index ea9e6f96..81f5087f 100644
--- a/.github/workflows/reusable-ubuntu.yml
+++ b/.github/workflows/reusable-ubuntu.yml
@@ -43,7 +43,7 @@ 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: ${{ matrix.os }}-multissl-openssl-${{ env.OPENSSL_VER }}
@@ -69,7 +69,7 @@ jobs:
     - name: Runner image version
       run: echo "IMAGE_VERSION=${ImageVersion}" >> $GITHUB_ENV
     - name: Restore config.cache
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: ${{ env.CPYTHON_BUILDDIR }}/config.cache
         key: ${{ github.job }}-${{ runner.os }}-${{ env.IMAGE_VERSION }}-${{ inputs.config_hash }}
diff --git a/.github/workflows/reusable-wasi.yml b/.github/workflows/reusable-wasi.yml
index e955e693..c0f782a0 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 }}
@@ -54,7 +54,7 @@ jobs:
       with:
         python-version: '3.x'
     - 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.
@@ -66,7 +66,7 @@ jobs:
     - name: "Make build Python"
       run: python3 Tools/wasm/wasi.py 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.