diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 44d9da1..c5e8128 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -26,7 +26,7 @@ jobs:
       # Install every targeted runtime so all three target frameworks actually execute under test,
       # not just compile. The SDK (last entry) drives the build.
       - name: Setup .NET (8 / 9 / 10)
-        uses: actions/setup-dotnet@v4
+        uses: actions/setup-dotnet@v5
         with:
           dotnet-version: |
             8.0.x
@@ -59,7 +59,7 @@ jobs:
           fetch-depth: 0  # SourceLink needs full history
 
       - name: Setup .NET 10 SDK
-        uses: actions/setup-dotnet@v4
+        uses: actions/setup-dotnet@v5
         with:
           dotnet-version: 10.0.x
 
@@ -109,7 +109,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Setup .NET (8 / 9 / 10)
-        uses: actions/setup-dotnet@v4
+        uses: actions/setup-dotnet@v5
         with:
           dotnet-version: |
             8.0.x
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index e95eac9..e8ac69f 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -33,7 +33,7 @@ jobs:
           fetch-depth: 0  # SourceLink and deterministic builds need full history
 
       - name: Setup .NET (8 / 9 / 10)
-        uses: actions/setup-dotnet@v4
+        uses: actions/setup-dotnet@v5
         with:
           dotnet-version: |
             8.0.x