diff --git a/.github/workflows/ports_esp32.yml b/.github/workflows/ports_esp32.yml
index 4c07f89437..63fd02a7eb 100644
--- a/.github/workflows/ports_esp32.yml
+++ b/.github/workflows/ports_esp32.yml
@@ -35,7 +35,7 @@ jobs:
 
     - name: Cached ESP-IDF install
       id: cache_esp_idf
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: |
           ./esp-idf/
diff --git a/.github/workflows/ports_zephyr.yml b/.github/workflows/ports_zephyr.yml
index eb85af6a36..2c14656caa 100644
--- a/.github/workflows/ports_zephyr.yml
+++ b/.github/workflows/ports_zephyr.yml
@@ -35,7 +35,7 @@ jobs:
       run: source tools/ci.sh && echo "ZEPHYR=$ZEPHYR_VERSION" | tee "$GITHUB_OUTPUT"
     - name: Cached Zephyr Workspace
       id: cache_workspace
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         # note that the Zephyr CI docker image is 15GB. At time of writing
         # GitHub caches are limited to 10GB total for a project. So we only