diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d1fc747..6b5d190 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,9 +10,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+      # Сборка требует SDK 10+: Roslyn-пакеты 5.3.0 (генератор ассет-хендлов)
+      # не загружаются компилятором из SDK 8. TargetFramework остаётся net8.0.
       - uses: actions/setup-dotnet@v4
         with:
-          dotnet-version: 8.0.x
+          dotnet-version: 10.0.x
       - name: Build
         run: dotnet build MrGameEng.sln --configuration Release
       - name: Test
diff --git a/CLAUDE.md b/CLAUDE.md
index ec7d3cd..223ac73 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -47,6 +47,9 @@ dotnet build MrGameEng.sln
 dotnet test MrGameEng.sln
 ```
 
+Building requires the .NET 10+ SDK (Roslyn 5.3 packages used by the asset-handles
+generator do not load under the SDK 8 compiler); the target framework stays net8.0.
+
 ## Architecture rules
 
 - ECS-first: components are plain data (`struct` implementing `IComponent`),