diff --git a/README.md b/README.md
index 8aa402f..59a5871 100644
--- a/README.md
+++ b/README.md
@@ -140,7 +140,7 @@ Symoblic linking to a location already on the PATH (like `/usr/local/bin/`) is r
 ```bash
 # Download release (replace version and runtime accordingly)
 cd ~/Downloads
-wget https://github.com/rubberduck203/GitNStats/releases/download/2.3.0/osx-x64.zip
+wget https://github.com/rubberduck203/GitNStats/releases/download/2.3.1/osx-x64.zip
 
 # Create directory to keep package
 mkdir -p ~/bin/gitnstats
diff --git a/appveyor.yml b/appveyor.yml
index 33ec4fa..92ad1cd 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,4 +1,4 @@
-version: 2.3.0.{build}
+version: 2.3.1.{build}
 pull_requests:
   do_not_increment_build_number: true
 image: Visual Studio 2019 Preview
diff --git a/src/gitnstats/Options.cs b/src/gitnstats/Options.cs
index b0579ad..8f76258 100644
--- a/src/gitnstats/Options.cs
+++ b/src/gitnstats/Options.cs
@@ -1,4 +1,7 @@
-using System;
+// re-enable when https://github.com/commandlineparser/commandline/pull/715 is merged & released
+#nullable disable
+
+using System;
 using System.Collections.Generic;
 using CommandLine;
 using CommandLine.Text;
@@ -10,10 +13,10 @@ public class Options
         private const string RepoPathHelpText = "Path to the git repository to be analyzed. Defaults to the current working directory.";
         
         [Value(1, HelpText = RepoPathHelpText, MetaName = "FilePath")]
-        public string? RepositoryPath { get; set; }
+        public string RepositoryPath { get; set; }
         
         [Option('b', "branch", HelpText = "Defaults to the currently active branch.")]
-        public string? BranchName { get; set; }
+        public string BranchName { get; set; }
         
         [Option('d', "date-filter", HelpText = "Get commits on or after this date. Defaults to no filter.")]
         public DateTime? DateFilter { get; set; }
diff --git a/src/gitnstats/gitnstats.csproj b/src/gitnstats/gitnstats.csproj
index 6541443..f8fcaff 100755
--- a/src/gitnstats/gitnstats.csproj
+++ b/src/gitnstats/gitnstats.csproj
@@ -2,7 +2,7 @@
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <TargetFramework>net5.0</TargetFramework>
-    <Version>2.3.0</Version>
+    <Version>2.3.1</Version>
     <PublishTrimmed>true</PublishTrimmed>
     <RuntimeIdentifiers>osx-x64;linux-x64;win10-x64</RuntimeIdentifiers>
     <Nullable>enable</Nullable>