diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 48cc895..169b9b5 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -44,7 +44,7 @@ jobs:
       # to a cold compile; trigger the "Warm release build cache" workflow manually
       # to pre-warm before a release if needed.
       - name: Restore Go build cache (warmed on main)
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@v6
         with:
           path: |
             ~/.cache/go-build
diff --git a/.github/workflows/warm-build-cache.yml b/.github/workflows/warm-build-cache.yml
index 9e90202..4ceb726 100644
--- a/.github/workflows/warm-build-cache.yml
+++ b/.github/workflows/warm-build-cache.yml
@@ -45,7 +45,7 @@ jobs:
           cache: false
 
       - name: Restore / seed Go module + build cache
-        uses: actions/cache@v4
+        uses: actions/cache@v6
         with:
           path: |
             ~/.cache/go-build