diff --git a/ConvertProjDepToProjRef.sln b/ConvertProjDepToProjRef.sln
deleted file mode 100644
index 8f321a0..0000000
--- a/ConvertProjDepToProjRef.sln
+++ /dev/null
@@ -1,36 +0,0 @@
-
-Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio Version 17
-VisualStudioVersion = 17.0.31710.8
-MinimumVisualStudioVersion = 10.0.40219.1
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ConvertProjDepToProjRef", "src\ConvertProjDepToProjRef.csproj", "{6F661442-8267-40BA-B984-B48BF1DC38D8}"
-EndProject
-Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{29631BE0-1DDD-4846-A61A-E3E8EC9F7C1B}"
-	ProjectSection(SolutionItems) = preProject
-		.editorconfig = .editorconfig
-		CHANGELOG.md = CHANGELOG.md
-		create-signed-release.cmd = create-signed-release.cmd
-		Directory.Build.props = Directory.Build.props
-		Directory.Packages.props = Directory.Packages.props
-		nuget.config = nuget.config
-		README.md = README.md
-	EndProjectSection
-EndProject
-Global
-	GlobalSection(SolutionConfigurationPlatforms) = preSolution
-		Debug|Any CPU = Debug|Any CPU
-		Release|Any CPU = Release|Any CPU
-	EndGlobalSection
-	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{6F661442-8267-40BA-B984-B48BF1DC38D8}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{6F661442-8267-40BA-B984-B48BF1DC38D8}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{6F661442-8267-40BA-B984-B48BF1DC38D8}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{6F661442-8267-40BA-B984-B48BF1DC38D8}.Release|Any CPU.Build.0 = Release|Any CPU
-	EndGlobalSection
-	GlobalSection(SolutionProperties) = preSolution
-		HideSolutionNode = FALSE
-	EndGlobalSection
-	GlobalSection(ExtensibilityGlobals) = postSolution
-		SolutionGuid = {70F97921-89DD-47C7-94C5-A958C2BD2F75}
-	EndGlobalSection
-EndGlobal
diff --git a/ConvertProjDepToProjRef.slnx b/ConvertProjDepToProjRef.slnx
new file mode 100644
index 0000000..76de0cf
--- /dev/null
+++ b/ConvertProjDepToProjRef.slnx
@@ -0,0 +1,17 @@
+<!---
+SPDX-FileCopyrightText: © 2025 Victor Derks
+SPDX-License-Identifier: MIT
+-->
+
+<Solution>
+  <Folder Name="/Solution Items/">
+    <File Path=".editorconfig" />
+    <File Path="CHANGELOG.md" />
+    <File Path="create-signed-release.cmd" />
+    <File Path="Directory.Build.props" />
+    <File Path="Directory.Packages.props" />
+    <File Path="nuget.config" />
+    <File Path="README.md" />
+  </Folder>
+  <Project Path="src/ConvertProjDepToProjRef.csproj" />
+</Solution>