diff --git a/README.md b/README.md
index c916215..a211f52 100644
--- a/README.md
+++ b/README.md
@@ -43,7 +43,9 @@ To use this helper - register `IFileIO` is your `DI` with `FileIO` as the implme
 - ReadAllText (path)
 - FileExists(path)
 - WriteAllLines(path, lines)
-- DeleteFile(path)
+- DeleteFile(path)
+- CreateDirectory (path)
+- DeleteDirectory (path)
 
 # Extension Methods
 
@@ -82,5 +84,6 @@ Merges to `main` publish to nuget as a major release.
 # Change Log
 - 1.1.0 - added IList.AddRange extension method
 - 1.2.0 - never published - only preview
-- 1.3.0 - added IFileIO - an interface + implementation for making common filesystem opperations easier to test
-- 1.3.1 - suppressed some test warnings and updated the GH workflows
+- 1.3.0 - added `IFileIO` - an interface + implementation for making common filesystem opperations easier to test
+- 1.3.1 - suppressed some test warnings and updated the GH workflows
+- 1.4.0 - added `CreatedDiretory` and `DeleteDirectory` to `IFileIO`
diff --git a/src/ExtensionTests/FileIOTests.cs b/src/ExtensionTests/FileIOTests.cs
index acad5b1..2e4cf80 100644
--- a/src/ExtensionTests/FileIOTests.cs
+++ b/src/ExtensionTests/FileIOTests.cs
@@ -68,10 +68,6 @@ public void FilesExists_DoesNotExist()
         result.Should().BeFalse();
     }
 
-
-    //Need WriteAllLines
-    //Need DeleteFile
-
     [Fact]
     public void WriteAllLines_withDeleteFile()
     {
@@ -114,4 +110,33 @@ public void WriteAllLines_withDeleteFile()
         var confirmDelete = _files.FileExists(target);
         confirmDelete.Should().BeFalse();
     }
+
+    [Fact]
+    public void DirectoryTests()
+    {
+        var basePath = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData, Environment.SpecialFolderOption.Create);
+        var TestDir = "TestIODir";
+        var dirPath = Path.Combine(basePath, TestDir);
+
+        var exists = _files.DirectoryExists(dirPath);
+        if(exists)
+        {
+            _files.DeleteDirectory(dirPath);
+            exists = _files.DirectoryExists(dirPath);
+        }
+        // Comnfirm Starting State
+        exists.Should().BeFalse();
+
+        // Create
+        _files.CreateDirectory(dirPath);
+        exists = _files.DirectoryExists(dirPath);
+        
+        // Confim Creation
+        exists.Should().BeTrue();
+
+        // CleanUp and Confim Delete
+        _files.DeleteDirectory(dirPath);
+        exists = _files.DirectoryExists(dirPath);
+        exists.Should().BeFalse();
+    }
 }
diff --git a/src/Extensions/Extensions.csproj b/src/Extensions/Extensions.csproj
index c18fed1..5b6c251 100644
--- a/src/Extensions/Extensions.csproj
+++ b/src/Extensions/Extensions.csproj
@@ -10,7 +10,7 @@
 		<Configurations>Debug;Release;NET7</Configurations>		
 		<RootNamespace>Calebs.Extensions</RootNamespace>
 		<AssemblyName>Calebs.Extensions</AssemblyName>
-		<Version>1.3.1</Version>
+		<Version>1.4.0</Version>
 		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
 		<Authors>Caleb Jenkins</Authors>
 		<Company>Caleb Jenkins</Company>
diff --git a/src/Extensions/SystemIO/IFileIO.cs b/src/Extensions/SystemIO/IFileIO.cs
index b7dc1d3..63383e4 100644
--- a/src/Extensions/SystemIO/IFileIO.cs
+++ b/src/Extensions/SystemIO/IFileIO.cs
@@ -10,11 +10,13 @@ namespace Calebs.Extensions.SystemIO;
 /// </summary>
 public interface IFileIO
 {
+    bool FileExists(string path) => File.Exists(path);
+    void DeleteFile(string path) => File.Delete(path);
+    string ReadAllText (string path) => File.ReadAllText(path);
+    void WriteAllLines(string path, IEnumerable<string> lines) => File.WriteAllLines(path, lines);
     string[] GetFiles(string path, string filter = "") => Directory.GetFiles(path, filter);
     bool DirectoryExists(string path) => Directory.Exists(path);
     string GetDirectoryName(string path) => Path.GetDirectoryName(path);
-    string ReadAllText (string path) => File.ReadAllText(path);
-    bool FileExists(string path) => File.Exists(path);
-    void WriteAllLines(string path, IEnumerable<string> lines) => File.WriteAllLines(path, lines);
-    void DeleteFile(string path) => File.Delete(path);
+    void CreateDirectory(string path) => Directory.CreateDirectory(path);
+    void DeleteDirectory (string path) => Directory.Delete(path);
 }