diff --git a/.github/workflows/build-and-release-optimized.yml b/.github/workflows/build-and-release-optimized.yml
index e702108..521d792 100644
--- a/.github/workflows/build-and-release-optimized.yml
+++ b/.github/workflows/build-and-release-optimized.yml
@@ -45,7 +45,7 @@ jobs:
 
       # OPTIMIZATION: Manual NuGet package caching
       - name: Cache NuGet packages
-        uses: actions/cache@v4
+        uses: actions/cache@v6
         with:
           path: ~/.nuget/packages
           key: ${{ runner.os }}-nuget-${{ hashFiles('**/*.csproj', '**/*.props') }}
diff --git a/.github/workflows/build-dev-preview.yml b/.github/workflows/build-dev-preview.yml
index 2c97330..7b566b4 100644
--- a/.github/workflows/build-dev-preview.yml
+++ b/.github/workflows/build-dev-preview.yml
@@ -45,7 +45,7 @@ jobs:
           fetch-depth: 0  # Full history for proper version detection
 
       - name: Cache NuGet packages
-        uses: actions/cache@v4
+        uses: actions/cache@v6
         with:
           path: ~/.nuget/packages
           key: ${{ runner.os }}-nuget-${{ hashFiles('**/*.csproj', '**/*.props') }}