diff --git a/EonaCat.Network.sln b/EonaCat.Network.sln
index 3b815a2..7a7063f 100644
--- a/EonaCat.Network.sln
+++ b/EonaCat.Network.sln
@@ -1,12 +1,10 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio Version 17
-VisualStudioVersion = 17.0.31903.59
+# Visual Studio Version 18
+VisualStudioVersion = 18.9.12128.139 oobstable
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "EonaCat.Network", "EonaCat.Network\EonaCat.Network.csproj", "{11B9181D-7186-4D81-A5D3-4804E9A61BA6}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "EonaCat.Network.Tester", "EonaCat.Network.Tester\EonaCat.Network.Tester.csproj", "{5CC25A51-3832-44CE-9940-AB9A26F21FFD}"
-EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -17,10 +15,6 @@ Global
 		{11B9181D-7186-4D81-A5D3-4804E9A61BA6}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{11B9181D-7186-4D81-A5D3-4804E9A61BA6}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{11B9181D-7186-4D81-A5D3-4804E9A61BA6}.Release|Any CPU.Build.0 = Release|Any CPU
-		{5CC25A51-3832-44CE-9940-AB9A26F21FFD}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{5CC25A51-3832-44CE-9940-AB9A26F21FFD}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{5CC25A51-3832-44CE-9940-AB9A26F21FFD}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{5CC25A51-3832-44CE-9940-AB9A26F21FFD}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE