diff --git a/.github/workflows/_hugo.yml b/.github/workflows/_hugo.yml
index e287d97b..5bcbc3b6 100644
--- a/.github/workflows/_hugo.yml
+++ b/.github/workflows/_hugo.yml
@@ -31,7 +31,7 @@ jobs:
         uses: actions/configure-pages@v5
 
       # Tier 1: Dependencies cache (changes infrequently)
-      - uses: actions/cache@v4
+      - uses: actions/cache@v5
         name: Cache dependencies
         with:
           path: |
@@ -45,7 +45,7 @@ jobs:
       - run: bun install
 
       # Tier 2: Hugo build cache (changes with any build-affecting file)
-      - uses: actions/cache@v4
+      - uses: actions/cache@v5
         name: Cache Hugo build resources
         with:
           path: |
@@ -57,7 +57,7 @@ jobs:
             ${{ runner.os }}-hugo-
 
       # Tier 3: Content and template cache (comprehensive file tracking)
-      - uses: actions/cache@v4
+      - uses: actions/cache@v5
         name: Cache Hugo content and assets
         with:
           path: |