diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 0000000..c7c5db6
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,14 @@
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    runs-on: windows-latest
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Invoke-Build
+      run: .\build.ps1
+      shell: powershell
diff --git a/PoshWyam.build.ps1 b/PoshWyam.build.ps1
index 25e9c56..ecb3295 100644
--- a/PoshWyam.build.ps1
+++ b/PoshWyam.build.ps1
@@ -52,9 +52,7 @@ Task RunTests InstallDependencies, Stage, {
 
     }
 
-    $testResults = Invoke-Pester @invokePesterParams
-
-    $testResults | ConvertTo-Json -Depth 5 | Set-Content (Join-Path $Artifacts 'PesterResults.json')
+    Invoke-Pester -OutputFile (Join-Path $Artifacts 'PesterResults.xml')
 }
 
 Task ConfirmTestsPassed {
diff --git a/PoshWyam/Private/ConvertFrom-Yaml.ps1 b/PoshWyam/Private/ConvertFrom-Yaml.ps1
index 7736d7d..3fe510f 100644
--- a/PoshWyam/Private/ConvertFrom-Yaml.ps1
+++ b/PoshWyam/Private/ConvertFrom-Yaml.ps1
@@ -9,9 +9,9 @@ function ConvertFrom-Yaml {
         if ($Yaml) {
             $stringReader = New-Object System.IO.StringReader($Yaml)
             try {
-                $deserializer = [YamlDotNet.Serialization.Deserializer]::new()
+                $deserializer = [YamlDotNet.Serialization.DeserializerBuilder]::new().Build()
                 $yamlObject = $deserializer.Deserialize($stringReader);
-                $serializer = [YamlDotNet.Serialization.Serializer]::new('JsonCompatible')
+                $serializer = [YamlDotNet.Serialization.SerializerBuilder]::new().JsonCompatible().Build()
                 $stringBuilder = [System.Text.StringBuilder]::new()
                 $stringWriter = [System.IO.StringWriter]::new($stringBuilder)
                 $serializer.Serialize($stringWriter, $yamlObject)
diff --git a/PoshWyam/Public/Invoke-Wyam.ps1 b/PoshWyam/Public/Invoke-Wyam.ps1
index a27272d..35074bb 100644
--- a/PoshWyam/Public/Invoke-Wyam.ps1
+++ b/PoshWyam/Public/Invoke-Wyam.ps1
@@ -255,7 +255,7 @@ function Invoke-Wyam {
         if (-not $root -or -not (Test-Path $root)) {
             $root = Join-Path $ModuleRoot 'Wyam'
         }
-        $wyam = Get-ChildItem -Path $root -Include wyam.exe -Recurse | Select-Object -First 1
+        $wyam = Get-ChildItem -Path $root -Include wyam.dll -Recurse | Select-Object -First 1
         $wyam = Resolve-Path $wyam
         Write-Verbose "Invoke-Wyam: Tool located at '$wyam'"
         $Arguments = ($Arguments | Quote) -join ' '
@@ -266,7 +266,7 @@ function Invoke-Wyam {
             Install-Wyam -Root $root
         }
 
-        $expr = "&`"$wyam`" $Arguments"
+        $expr = "&`"dotnet`" `"$wyam`" $Arguments"
         Write-Verbose "Invoke-Wyam: Running command '$expr'"
         Invoke-Expression $expr
     }
diff --git a/PoshWyam/Public/New-BlogPost.ps1 b/PoshWyam/Public/New-BlogPost.ps1
index 640efe7..85d0461 100644
--- a/PoshWyam/Public/New-BlogPost.ps1
+++ b/PoshWyam/Public/New-BlogPost.ps1
@@ -11,12 +11,15 @@ function New-BlogPost {
         [Parameter(Position=0, Mandatory=$True)]
         [string]
         $Title,
-        
+
         # The tags to include in the blog post.
         [Parameter(Position=1, Mandatory=$False)]
         [string[]]
         $Tag = @(),
 
+        [switch]
+        $IncludeDateInFileName,
+
         # The Wyam project root.
         $Root = (Get-WyamRoot),
 
@@ -24,10 +27,10 @@ function New-BlogPost {
         [switch]
         $Draft
     )
-    
+
     begin {
     }
-    
+
     process {
         # Get directory
         $parms = @{ 'Root' = $Root }
@@ -36,8 +39,13 @@ function New-BlogPost {
         }
         $posts = Get-BlogPostsLocation @parms
 
+        $fileName = Get-FileName -Title $Title -Extension ".md"
+
+        if($IncludeDateInFileName){
+            $fileName = "$((Get-Date).ToString("yyyy-MM-dd"))-$fileName"
+        }
         # Get path to post to create
-        $path = Join-Path $posts (Get-BlogPostName $Title)
+        $path = Join-Path $posts $fileName
 
         # Create post
         $content = @"
@@ -52,7 +60,7 @@ Tags: [$(($Tag | ForEach-Object { """$_""" }) -join ', ')]
         Set-Content -Path $path -Value $content
         Resolve-Path $path
     }
-    
+
     end {
     }
 }
diff --git a/build.ps1 b/build.ps1
index 27754f0..6900d53 100644
--- a/build.ps1
+++ b/build.ps1
@@ -1,7 +1,7 @@
 if (-not (Get-Module InvokeBuild)) {
     Import-Module InvokeBuild -ErrorAction SilentlyContinue
     if (-not (Get-Module InvokeBuild)) {
-        Install-Module InvokeBuild -Scope CurrentUser
+        Install-Module InvokeBuild -Scope CurrentUser -Force
         Import-Module InvokeBuild -ErrorAction Stop
     }
 }
diff --git a/tests/Public/New-BlogPost.tests.ps1 b/tests/Public/New-BlogPost.tests.ps1
new file mode 100644
index 0000000..5f5364d
--- /dev/null
+++ b/tests/Public/New-BlogPost.tests.ps1
@@ -0,0 +1,27 @@
+Import-Module "$Artifacts\PoshWyam\PoshWyam.psd1" -Force
+
+Describe "New-BlogPost" {
+
+    BeforeAll {
+        [void](New-Item -Path "TestDrive:\config.wyam" -ItemType File)
+        [void](New-Item -Path "TestDrive:\input\posts" -ItemType Directory)
+
+        Push-Location "TestDrive:\"
+    }
+
+    AfterAll {
+        Pop-Location
+    }
+
+    Context "With -Title" {
+        It "runs without error" {
+
+            $before = (Get-ChildItem "TestDrive:\input\posts").Count
+            New-BlogPost -Title "test post"
+
+            (Get-ChildItem "TestDrive:\input\posts").Count | Should be ($before + 1)
+
+        }
+    }
+
+}
\ No newline at end of file