diff --git a/Lombiq.HelpfulLibraries.AspNetCore/Security/ApplicationBuilderExtensions.cs b/Lombiq.HelpfulLibraries.AspNetCore/Security/ApplicationBuilderExtensions.cs
index 358ebeec..7c9f4c2b 100644
--- a/Lombiq.HelpfulLibraries.AspNetCore/Security/ApplicationBuilderExtensions.cs
+++ b/Lombiq.HelpfulLibraries.AspNetCore/Security/ApplicationBuilderExtensions.cs
@@ -159,7 +159,7 @@ static void UpdateIfMissing(ref string cookie, ref bool changed, string test, st
 
                 if (changed)
                 {
-                    context.Response.Headers[setCookieHeader] = new StringValues(newCookies.ToArray());
+                    context.Response.Headers[setCookieHeader] = new StringValues([.. newCookies]);
                 }
 
                 return Task.CompletedTask;