diff --git a/src/AspNetCore.SecurityKey/ISecurityKeyValidator.cs b/src/AspNetCore.SecurityKey/ISecurityKeyValidator.cs
index 7e60c41..bce0822 100644
--- a/src/AspNetCore.SecurityKey/ISecurityKeyValidator.cs
+++ b/src/AspNetCore.SecurityKey/ISecurityKeyValidator.cs
@@ -11,15 +11,19 @@ public interface ISecurityKeyValidator
     /// Validates the specified security API key.
     /// </summary>
     /// <param name="value">The security API key to validate.</param>
-    /// <returns>true if security API key is valid; otherwise false</returns>
-    ValueTask<bool> Validate(string? value);
+    /// <param name="cancellationToken">The cancellation token.</param>
+    /// <returns>
+    /// true if security API key is valid; otherwise false
+    /// </returns>
+    ValueTask<bool> Validate(string? value, CancellationToken cancellationToken = default);
 
     /// <summary>
     /// Authenticate the specified security API key.
     /// </summary>
     /// <param name="value">The security API key to validate.</param>
+    /// <param name="cancellationToken">The cancellation token.</param>
     /// <returns>
-    /// <see cref="ClaimsIdentity"/> result of the authentication
+    ///   <see cref="ClaimsIdentity" /> result of the authentication
     /// </returns>
-    ValueTask<ClaimsIdentity> Authenticate(string? value);
+    ValueTask<ClaimsIdentity> Authenticate(string? value, CancellationToken cancellationToken = default);
 }
diff --git a/src/AspNetCore.SecurityKey/SecurityKeyMiddleware.cs b/src/AspNetCore.SecurityKey/SecurityKeyMiddleware.cs
index e9275c8..41a83f7 100644
--- a/src/AspNetCore.SecurityKey/SecurityKeyMiddleware.cs
+++ b/src/AspNetCore.SecurityKey/SecurityKeyMiddleware.cs
@@ -29,8 +29,7 @@ public SecurityKeyMiddleware(
 
     public async Task InvokeAsync(HttpContext context)
     {
-        if (context is null)
-            throw new ArgumentNullException(nameof(context));
+        ArgumentNullException.ThrowIfNull(context);
 
         var securityKey = _securityKeyExtractor.GetKey(context);
 
diff --git a/src/AspNetCore.SecurityKey/SecurityKeyValidator.cs b/src/AspNetCore.SecurityKey/SecurityKeyValidator.cs
index 5ef5674..0fcf05d 100644
--- a/src/AspNetCore.SecurityKey/SecurityKeyValidator.cs
+++ b/src/AspNetCore.SecurityKey/SecurityKeyValidator.cs
@@ -42,7 +42,7 @@ public SecurityKeyValidator(
     }
 
     /// <inheritdoc />
-    public async ValueTask<ClaimsIdentity> Authenticate(string? value)
+    public async ValueTask<ClaimsIdentity> Authenticate(string? value, CancellationToken cancellationToken = default)
     {
         var isValid = await Validate(value);
 
@@ -57,7 +57,7 @@ public async ValueTask<ClaimsIdentity> Authenticate(string? value)
     }
 
     /// <inheritdoc />
-    public ValueTask<bool> Validate(string? value)
+    public ValueTask<bool> Validate(string? value, CancellationToken cancellationToken = default)
     {
         if (string.IsNullOrWhiteSpace(value))
             return ValueTask.FromResult(false);