diff --git a/.github/workflows/build-packages.yml b/.github/workflows/build-packages.yml
index ce3fd816..fe9bc11c 100644
--- a/.github/workflows/build-packages.yml
+++ b/.github/workflows/build-packages.yml
@@ -67,7 +67,7 @@ jobs:
             # Try to restore from cache first
             - name: Restore packages cache
               id: check-cache
-              uses: actions/cache/restore@v4
+              uses: actions/cache/restore@v6
               with:
                   path: |
                       packages/*/dist
@@ -94,7 +94,7 @@ jobs:
             # Save to cache if we built
             - name: Save packages cache
               if: steps.check-cache.outputs.cache-hit != 'true'
-              uses: actions/cache/save@v4
+              uses: actions/cache/save@v6
               with:
                   path: |
                       packages/*/dist
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a675767f..749cae06 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -41,7 +41,7 @@ jobs:
 
             # Cache Turborepo build outputs
             - name: Setup Turborepo cache
-              uses: actions/cache@v4
+              uses: actions/cache@v6
               with:
                   path: |
                       .turbo
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 03b17fdd..663e7c11 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -407,7 +407,7 @@ jobs:
 
             # Cache Turborepo outputs for faster builds
             - name: Cache Turborepo
-              uses: actions/cache@v4
+              uses: actions/cache@v6
               with:
                   path: .turbo
                   key: ${{ runner.os }}-turbo-${{ hashFiles('pnpm-lock.yaml') }}-${{ github.sha }}
@@ -418,7 +418,7 @@ jobs:
             # Cache framework-specific build outputs
             - name: Cache Next.js builds
               if: steps.config.outputs.app-type == 'nextjs'
-              uses: actions/cache@v4
+              uses: actions/cache@v6
               with:
                   path: |
                       apps/${{ matrix.folder }}/.next/cache
@@ -435,7 +435,7 @@ jobs:
 
             - name: Cache Vite builds
               if: steps.config.outputs.app-type == 'vite'
-              uses: actions/cache@v4
+              uses: actions/cache@v6
               with:
                   path: |
                       apps/${{ matrix.folder }}/dist
@@ -475,7 +475,7 @@ jobs:
             # Fallback restore-key covers the edge case where build-packages was skipped
             # (e.g. workflow_dispatch without build-packages running).
             - name: Restore cached packages
-              uses: actions/cache/restore@v4
+              uses: actions/cache/restore@v6
               with:
                   path: |
                       packages/*/dist
diff --git a/.github/workflows/pr-preview.yml b/.github/workflows/pr-preview.yml
index d36bf150..02ea1cf8 100644
--- a/.github/workflows/pr-preview.yml
+++ b/.github/workflows/pr-preview.yml
@@ -314,7 +314,7 @@ jobs:
               run: pnpm install --frozen-lockfile --ignore-scripts=false
 
             - name: Cache Turborepo
-              uses: actions/cache@v4
+              uses: actions/cache@v6
               with:
                   path: .turbo
                   key: ${{ runner.os }}-turbo-${{ hashFiles('pnpm-lock.yaml') }}-${{ github.sha }}
@@ -324,7 +324,7 @@ jobs:
 
             - name: Cache Next.js builds
               if: steps.config.outputs.app-type == 'nextjs'
-              uses: actions/cache@v4
+              uses: actions/cache@v6
               with:
                   path: |
                       apps/${{ matrix.folder }}/.next/cache
@@ -341,7 +341,7 @@ jobs:
 
             - name: Cache Vite builds
               if: steps.config.outputs.app-type == 'vite'
-              uses: actions/cache@v4
+              uses: actions/cache@v6
               with:
                   path: |
                       apps/${{ matrix.folder }}/dist
@@ -389,7 +389,7 @@ jobs:
                   echo "📦 Cache key: ${CACHE_KEY}"
 
             - name: Restore cached packages
-              uses: actions/cache/restore@v4
+              uses: actions/cache/restore@v6
               with:
                   path: |
                       packages/*/dist