diff --git a/.github/workflows/linux_qemu.yml b/.github/workflows/linux_qemu.yml
index e4688e5..323374d 100644
--- a/.github/workflows/linux_qemu.yml
+++ b/.github/workflows/linux_qemu.yml
@@ -112,7 +112,7 @@ jobs:
         sudo apt install -y ninja-build gcc-${TOOLCHAIN_NAME} g++-${TOOLCHAIN_NAME} gfortran-${TOOLCHAIN_NAME}
 
     - name: Cache docker container
-      uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
+      uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
       id: container-cache
       with:
         path: ~/docker_${{ matrix.BUILD_PROP[1] }}
@@ -217,7 +217,7 @@ jobs:
         sudo apt install -y ninja-build gcc-14-${TOOLCHAIN_NAME} g++-14-${TOOLCHAIN_NAME} gfortran-14-${TOOLCHAIN_NAME}
 
     - name: Cache docker container
-      uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
+      uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
       id: container-cache
       with:
         path: ~/docker_${{ matrix.BUILD_PROP[1] }}
diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index 2787a7c..5e2f18a 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -49,7 +49,7 @@ jobs:
         echo "today=$(/bin/date -u '+%Y%m%d')" >> $GITHUB_OUTPUT
 
     - name: Setup compiler cache
-      uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
+      uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
       id:    cache-ccache
       with:
         path: ${{ steps.prep-ccache.outputs.dir }}
@@ -73,7 +73,7 @@ jobs:
     # ensure we re-solve once a day (since we don't lock versions). Could be
     # replaced by a conda-lock based approach in the future.
     - name: Cache conda environment
-      uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
+      uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
       env:
         # Increase this value to reset cache if environment.yml has not changed
         CACHE_NUMBER: 1