diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 41a464f..46226f0 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -28,7 +28,7 @@ jobs:
     - name: Pack
       run: dotnet pack -c Release -o .artifacts --no-restore --no-build
     
-    - uses: actions/upload-artifact@v2
+    - uses: actions/upload-artifact@v4
       with:
         name: nuget
         path: .artifacts/*.nupkg
diff --git a/src/Depends.Core/DependencyAnalyzer.cs b/src/Depends.Core/DependencyAnalyzer.cs
index 8d02b44..73f3bf6 100644
--- a/src/Depends.Core/DependencyAnalyzer.cs
+++ b/src/Depends.Core/DependencyAnalyzer.cs
@@ -152,7 +152,7 @@ private static async Task ResolvePackage(PackageIdentity package,
                 {
                     await Task.WhenAll(dependencyInfo.Dependencies.Select(dependency =>
                     {
-                        return DependencyAnalyzer.ResolvePackage(new PackageIdentity(dependency.Id, dependency.VersionRange.MinVersion),
+                        return ResolvePackage(new PackageIdentity(dependency.Id, dependency.VersionRange.MinVersion),
                             framework, cacheContext, logger, repositories, availablePackages);
                     }));
                 }
@@ -170,7 +170,7 @@ public DependencyGraph AnalyzeSolution(string solution, string framework = null)
             var builder = new DependencyGraph.Builder(solutionNode);
             foreach (var project in analyzerManager.Projects.Where(p => p.Value.ProjectInSolution.ProjectType == SolutionProjectType.KnownToBeMSBuildFormat))
             {
-                builder = DependencyAnalyzer.CreateBuilder(project.Value, project.Key, builder, framework);
+                builder = CreateBuilder(project.Value, project.Key, builder, framework);
             }
 
             return builder.Build();
@@ -194,7 +194,7 @@ public DependencyGraph Analyze(string projectPath, string framework = null)
             }
 
             var projectAnalyzer = analyzerManager.GetProject(projectPath);
-            return DependencyAnalyzer.CreateBuilder(projectAnalyzer, projectPath, null, framework).Build();
+            return CreateBuilder(projectAnalyzer, projectPath, null, framework).Build();
         }
 
         private static DependencyGraph.Builder CreateBuilder(IProjectAnalyzer  projectAnalyzer, string projectPath, DependencyGraph.Builder builder = null, string framework = null)