diff --git a/dopt.TOM/Plugin.cs b/dopt.TOM/Plugin.cs
index 4d742f7..dcbcbe2 100644
--- a/dopt.TOM/Plugin.cs
+++ b/dopt.TOM/Plugin.cs
@@ -13,7 +13,7 @@ namespace dopt.TOM
         internal const string langMainStopSearchFolderName = "python";
         internal const string doptTOMPluginLibraryUsage = "1";
         protected dynamic tomWrapperPipelines;
-        public Plugin(string runtimePath) : base(SharpPython.PyOptimLevels.O, threaded: false, runtimePath: runtimePath, verbose: true) 
+        public Plugin(string runtimePath = "") : base(SharpPython.PyOptimLevels.O, threaded: false, runtimePath: runtimePath, verbose: true) 
         {
             base.Initialise();
             using (Py.GIL())
diff --git a/dopt.TOM/dopt.TOM.csproj b/dopt.TOM/dopt.TOM.csproj
index 032b78b..92c9f75 100644
--- a/dopt.TOM/dopt.TOM.csproj
+++ b/dopt.TOM/dopt.TOM.csproj
@@ -3,7 +3,7 @@
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
     <PlatformTarget>x64</PlatformTarget>
-    <Version>0.1.2</Version>
+    <Version>0.1.3-alpha1</Version>
     <Platforms>x64</Platforms>
   </PropertyGroup>