diff --git a/.github/workflows/buf-ci.yaml b/.github/workflows/buf-ci.yaml
index d7780474..098cac0b 100644
--- a/.github/workflows/buf-ci.yaml
+++ b/.github/workflows/buf-ci.yaml
@@ -40,7 +40,7 @@ jobs:
             # github_token: ${{ secrets.GITHUB_TOKEN }}
       - name: Restore proto/gen cache
         id: restore-proto-gen
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@v5
         with:
           path: head/proto/gen
           key: proto-gen-${{ hashFiles('head/proto/**/*.proto', 'head/proto/buf.gen.yaml', 'head/proto/buf.yaml') }}
@@ -52,7 +52,7 @@ jobs:
         run: cd head/proto && buf generate
       - name: Save proto/gen cache
         if: steps.restore-proto-gen.outputs.cache-hit != 'true'
-        uses: actions/cache/save@v4
+        uses: actions/cache/save@v5
         with:
           path: head/proto/gen
           key: proto-gen-${{ hashFiles('head/proto/**/*.proto', 'head/proto/buf.gen.yaml', 'head/proto/buf.yaml') }}
diff --git a/.github/workflows/ci-tests.yml b/.github/workflows/ci-tests.yml
index a893f710..345f365c 100644
--- a/.github/workflows/ci-tests.yml
+++ b/.github/workflows/ci-tests.yml
@@ -92,7 +92,7 @@ jobs:
 
       - name: Restore Bazel external headers cache
         id: cache-externals
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: bazel-external-includes.tar.gz
           key: bazel-external-includes-v13-${{ hashFiles('MODULE.bazel') }}
@@ -259,7 +259,7 @@ jobs:
 
       - name: Restore Bazel external headers cache
         id: cache-externals
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: bazel-external-includes.tar.gz
           key: bazel-external-includes-v13-${{ hashFiles('MODULE.bazel') }}