diff --git a/Utility.Toolkit.Tests/Utility.Toolkit.Tests.csproj b/Utility.Toolkit.Tests/Utility.Toolkit.Tests.csproj
index 10a8a03..d22e35a 100644
--- a/Utility.Toolkit.Tests/Utility.Toolkit.Tests.csproj
+++ b/Utility.Toolkit.Tests/Utility.Toolkit.Tests.csproj
@@ -10,7 +10,7 @@
 
   <ItemGroup>
     <PackageReference Include="coverlet.collector" Version="*" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.*" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.*" />
     <PackageReference Include="NUnit" Version="3.14.*" />
     <PackageReference Include="NUnit.Analyzers" Version="3.9.*" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.5.*" />
diff --git a/Utility.Toolkit/ICommandAsync_T.cs b/Utility.Toolkit/ICommandAsync_T.cs
new file mode 100644
index 0000000..883b86b
--- /dev/null
+++ b/Utility.Toolkit/ICommandAsync_T.cs
@@ -0,0 +1,28 @@
+using System;
+
+namespace Utility.Toolkit;
+
+/// <summary>
+/// Defines a command with a single generic parameter.
+/// </summary>
+/// <typeparam name="T">The type of parameter used by the command.</typeparam>
+public interface ICommandAsync<in T>
+{
+    /// <summary>
+    /// Occurs when changes occur that affect whether the command should execute.
+    /// </summary>
+    event AsyncEventHandler CanExecuteChanged;
+
+    /// <summary>
+    /// Determines whether the command can execute in its current state with the given parameter.
+    /// </summary>
+    /// <param name="parameter">Data used by the command.</param>
+    /// <returns>true if this command can be executed; otherwise, false.</returns>
+    bool CanExecute(T parameter);
+
+    /// <summary>
+    /// Executes the command with the given parameter.
+    /// </summary>
+    /// <param name="parameter">Data used by the command.</param>
+    void Execute(T parameter);
+}
diff --git a/Utility.Toolkit/Utility.Toolkit.csproj b/Utility.Toolkit/Utility.Toolkit.csproj
index 39a58ee..9fded24 100644
--- a/Utility.Toolkit/Utility.Toolkit.csproj
+++ b/Utility.Toolkit/Utility.Toolkit.csproj
@@ -18,6 +18,7 @@
 			<PrivateAssets>all</PrivateAssets>
 			<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
 		</PackageReference>
+		<PackageReference Include="Utility.Helpers" Version="*" />
 	</ItemGroup>
 
 </Project>