diff --git a/.github/workflows/build-and-test.yaml b/.github/workflows/build-and-test.yaml
new file mode 100644
index 0000000..0bed5c6
--- /dev/null
+++ b/.github/workflows/build-and-test.yaml
@@ -0,0 +1,9 @@
+name: build-and-test
+on: [push, pull_request]
+jobs:
+  build-and-test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - run: dotnet build -c Release
+      - run: dotnet test -c Release --no-build
\ No newline at end of file
diff --git a/.github/workflows/publish.yaml b/.github/workflows/publish.yaml
new file mode 100644
index 0000000..4f058f6
--- /dev/null
+++ b/.github/workflows/publish.yaml
@@ -0,0 +1,14 @@
+name: publish
+on:
+  release:
+    types: [published]
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - run: dotnet build -c Release
+      - run: dotnet test -c Release --no-build
+      - run: dotnet nuget push "**/*.nupkg" --api-key "$NUGET_API_KEY" --source https://api.nuget.org/v3/index.json
+        env:
+          NUGET_API_KEY: ${{ secrets.NUGET_API_KEY }}
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index b06e864..6d4aebe 100644
--- a/.gitignore
+++ b/.gitignore
@@ -25,6 +25,9 @@ bld/
 # Visual Studio 2015 cache/options directory
 .vs/
 
+# Rider
+.idea/
+
 # MSTest test Results
 [Tt]est[Rr]esult*/
 [Bb]uild[Ll]og.*
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0aeb8f3..d663d9b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
-Version 2.0
+Version 2.1 (2020-11-27)
+
+ - Added nullable context and updated to C# 9
+
+Version 2.0 (2020-01-15)
 
  - Framework Changed to NetStandard 2.0
diff --git a/SimpleHashing.Net.Tests/SimpleHashTests.cs b/SimpleHashing.Net.Tests/SimpleHashTests.cs
index 15b2235..702babe 100644
--- a/SimpleHashing.Net.Tests/SimpleHashTests.cs
+++ b/SimpleHashing.Net.Tests/SimpleHashTests.cs
@@ -20,9 +20,8 @@ public void TestInitialize()
         [TestMethod]
         public void Estimate_Always_ReturnsReasonableTime()
         {
-            TimeSpan estimate = m_SimpleHash.Estimate(TestPassword, 50);
-
-            Assert.IsTrue(estimate.TotalMilliseconds < 10);
+            var estimate = m_SimpleHash.Estimate(TestPassword, 50);
+            Assert.IsTrue(estimate.TotalMilliseconds < 50);
         }
 
         [TestMethod, ExpectedException(typeof (ArgumentException))]
@@ -64,7 +63,7 @@ public void Verify_WithWrongPassword_ReturnsFalse()
         }
 
         [TestMethod]
-        public void Verfiy_WithoutIterationsParameter_WorksWithDefault()
+        public void Verify_WithoutIterationsParameter_WorksWithDefault()
         {
             string hash = m_SimpleHash.Compute(TestPassword);
 
diff --git a/SimpleHashing.Net.sln b/SimpleHashing.Net.sln
index 6ce7023..c14bfe4 100644
--- a/SimpleHashing.Net.sln
+++ b/SimpleHashing.Net.sln
@@ -18,7 +18,6 @@ Global
 		{90F7B3F6-6B70-49B1-97C9-6C12F445144D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{90F7B3F6-6B70-49B1-97C9-6C12F445144D}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{90F7B3F6-6B70-49B1-97C9-6C12F445144D}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{90F7B3F6-6B70-49B1-97C9-6C12F445144D}.Release|Any CPU.Build.0 = Release|Any CPU
 		{7E8A0E0B-CDD1-4A7B-957F-EC57D5CFB5CF}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{7E8A0E0B-CDD1-4A7B-957F-EC57D5CFB5CF}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{7E8A0E0B-CDD1-4A7B-957F-EC57D5CFB5CF}.Release|Any CPU.ActiveCfg = Release|Any CPU
diff --git a/SimpleHashing.Net/SimpleHashParameters.cs b/SimpleHashing.Net/SimpleHashParameters.cs
index efd8295..f13fc04 100644
--- a/SimpleHashing.Net/SimpleHashParameters.cs
+++ b/SimpleHashing.Net/SimpleHashParameters.cs
@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 
 namespace SimpleHashing.Net
 {
@@ -16,7 +17,10 @@ public SimpleHashParameters(string passwordHashString)
         {
             string[] parameters = ParseParameters(passwordHashString);
 
-            ProcessParameters(parameters);
+            Algorithm = parameters[0];
+            Iterations = int.Parse(parameters[1]);
+            Salt = parameters[2];
+            PasswordHash = parameters[3];
         }
 
         private static string[] ParseParameters(string passwordHashString)
@@ -29,13 +33,5 @@ private static string[] ParseParameters(string passwordHashString)
             }
             return parameters;
         }
-
-        private void ProcessParameters(string[] parameters)
-        {
-            Algorithm = parameters[0];
-            Iterations = int.Parse(parameters[1]);
-            Salt = parameters[2];
-            PasswordHash = parameters[3];
-        }
     }
 }
\ No newline at end of file
diff --git a/SimpleHashing.Net/SimpleHashing.Net.csproj b/SimpleHashing.Net/SimpleHashing.Net.csproj
index d85ee0b..f4ba979 100644
--- a/SimpleHashing.Net/SimpleHashing.Net.csproj
+++ b/SimpleHashing.Net/SimpleHashing.Net.csproj
@@ -3,15 +3,16 @@
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
-    <Version>2.0.1</Version>
+    <Version>2.1.0</Version>
     <Authors>Ilya Chernomordik</Authors>
-    <Company></Company>
-    <Product />
     <Description>A simple password hashing based on top of Microsoft PBKDF2 with an easy to use interface</Description>
     <PackageReleaseNotes>Added an additional tag to nuget</PackageReleaseNotes>
     <PackageTags>pbkdf2, cryptography, Microsoft, hash, hashing, security, encryption, password, Rfc2898DeriveBytes, bcrypt</PackageTags>
-    <RepositoryUrl></RepositoryUrl>
+    <RepositoryUrl>https://github.com/ilya-git/SimpleHashing.Net.git</RepositoryUrl>
     <PackageProjectUrl>https://github.com/ilya-git/SimpleHashing.Net</PackageProjectUrl>
+    <Nullable>enable</Nullable>
+    <WarningsAsErrors>nullable</WarningsAsErrors>
+    <LangVersion>9</LangVersion>
   </PropertyGroup>
-
+  
 </Project>