diff --git a/src/Umbraco.Web.BackOffice/Security/BackOfficeSecurityStampValidator.cs b/src/Umbraco.Web.BackOffice/Security/BackOfficeSecurityStampValidator.cs
index 577dc8ce08..755367312f 100644
--- a/src/Umbraco.Web.BackOffice/Security/BackOfficeSecurityStampValidator.cs
+++ b/src/Umbraco.Web.BackOffice/Security/BackOfficeSecurityStampValidator.cs
@@ -13,8 +13,8 @@ public class BackOfficeSecurityStampValidator : SecurityStampValidator<BackOffic
 {
     public BackOfficeSecurityStampValidator(
         IOptions<BackOfficeSecurityStampValidatorOptions> options,
-        BackOfficeSignInManager signInManager, ISystemClock clock, ILoggerFactory logger)
-        : base(options, signInManager, clock, logger)
+        BackOfficeSignInManager signInManager, ILoggerFactory logger)
+        : base(options, signInManager, logger)
     {
     }
 }
diff --git a/src/Umbraco.Web.BackOffice/Security/BackOfficeSessionIdValidator.cs b/src/Umbraco.Web.BackOffice/Security/BackOfficeSessionIdValidator.cs
index f0cb1beee5..5078b20d4a 100644
--- a/src/Umbraco.Web.BackOffice/Security/BackOfficeSessionIdValidator.cs
+++ b/src/Umbraco.Web.BackOffice/Security/BackOfficeSessionIdValidator.cs
@@ -35,15 +35,15 @@ public class BackOfficeSessionIdValidator
 {
     public const string CookieName = "UMB_UCONTEXT_C";
     private readonly GlobalSettings _globalSettings;
-    private readonly ISystemClock _systemClock;
+    private readonly TimeProvider _timeProvider;
     private readonly IBackOfficeUserManager _userManager;
 
     /// <summary>
     ///     Initializes a new instance of the <see cref="BackOfficeSessionIdValidator" /> class.
     /// </summary>
-    public BackOfficeSessionIdValidator(ISystemClock systemClock, IOptionsSnapshot<GlobalSettings> globalSettings, IBackOfficeUserManager userManager)
+    public BackOfficeSessionIdValidator(TimeProvider timeProvider, IOptionsSnapshot<GlobalSettings> globalSettings, IBackOfficeUserManager userManager)
     {
-        _systemClock = systemClock;
+        _timeProvider = timeProvider;
         _globalSettings = globalSettings.Value;
         _userManager = userManager;
     }
@@ -55,7 +55,7 @@ public class BackOfficeSessionIdValidator
             return;
         }
 
-        var valid = await ValidateSessionAsync(validateInterval, context.HttpContext, context.Options.CookieManager, _systemClock, context.Properties.IssuedUtc, context.Principal?.Identity as ClaimsIdentity);
+        var valid = await ValidateSessionAsync(validateInterval, context.HttpContext, context.Options.CookieManager, _timeProvider, context.Properties.IssuedUtc, context.Principal?.Identity as ClaimsIdentity);
 
         if (valid == false)
         {
@@ -68,7 +68,7 @@ public class BackOfficeSessionIdValidator
         TimeSpan validateInterval,
         HttpContext httpContext,
         ICookieManager cookieManager,
-        ISystemClock systemClock,
+        TimeProvider timeProvider,
         DateTimeOffset? authTicketIssueDate,
         ClaimsIdentity? currentIdentity)
     {
@@ -82,9 +82,9 @@ public class BackOfficeSessionIdValidator
             throw new ArgumentNullException(nameof(cookieManager));
         }
 
-        if (systemClock == null)
+        if (timeProvider == null)
         {
-            throw new ArgumentNullException(nameof(systemClock));
+            throw new ArgumentNullException(nameof(timeProvider));
         }
 
         if (currentIdentity == null)
@@ -93,7 +93,7 @@ public class BackOfficeSessionIdValidator
         }
 
         DateTimeOffset? issuedUtc = null;
-        DateTimeOffset currentUtc = systemClock.UtcNow;
+        DateTimeOffset currentUtc = timeProvider.GetUtcNow();
 
         // read the last checked time from a custom cookie
         var lastCheckedCookie = cookieManager.GetRequestCookie(httpContext, CookieName);
diff --git a/src/Umbraco.Web.BackOffice/Security/ConfigureBackOfficeCookieOptions.cs b/src/Umbraco.Web.BackOffice/Security/ConfigureBackOfficeCookieOptions.cs
index ae2312c67e..fea4d3b4a1 100644
--- a/src/Umbraco.Web.BackOffice/Security/ConfigureBackOfficeCookieOptions.cs
+++ b/src/Umbraco.Web.BackOffice/Security/ConfigureBackOfficeCookieOptions.cs
@@ -31,7 +31,7 @@ public class ConfigureBackOfficeCookieOptions : IConfigureNamedOptions<CookieAut
     private readonly IRuntimeState _runtimeState;
     private readonly SecuritySettings _securitySettings;
     private readonly IServiceProvider _serviceProvider;
-    private readonly ISystemClock _systemClock;
+    private readonly TimeProvider _timeProvider;
     private readonly IUmbracoContextAccessor _umbracoContextAccessor;
     private readonly UmbracoRequestPaths _umbracoRequestPaths;
     private readonly IUserService _userService;
@@ -48,7 +48,7 @@ public class ConfigureBackOfficeCookieOptions : IConfigureNamedOptions<CookieAut
     /// <param name="dataProtection">The <see cref="IDataProtectionProvider" /></param>
     /// <param name="userService">The <see cref="IUserService" /></param>
     /// <param name="ipResolver">The <see cref="IIpResolver" /></param>
-    /// <param name="systemClock">The <see cref="ISystemClock" /></param>
+    /// <param name="timeProvider">The <see cref="TimeProvider" /></param>
     /// <param name="umbracoRequestPaths">The <see cref="UmbracoRequestPaths"/></param>
     /// <param name="basicAuthService">The <see cref="IBasicAuthService"/></param>
     public ConfigureBackOfficeCookieOptions(
@@ -61,7 +61,7 @@ public class ConfigureBackOfficeCookieOptions : IConfigureNamedOptions<CookieAut
         IDataProtectionProvider dataProtection,
         IUserService userService,
         IIpResolver ipResolver,
-        ISystemClock systemClock,
+        TimeProvider timeProvider,
         UmbracoRequestPaths umbracoRequestPaths,
         IBasicAuthService basicAuthService)
     {
@@ -74,7 +74,7 @@ public class ConfigureBackOfficeCookieOptions : IConfigureNamedOptions<CookieAut
         _dataProtection = dataProtection;
         _userService = userService;
         _ipResolver = ipResolver;
-        _systemClock = systemClock;
+        _timeProvider = timeProvider;
         _umbracoRequestPaths = umbracoRequestPaths;
         _basicAuthService = basicAuthService;
     }
@@ -187,8 +187,8 @@ public class ConfigureBackOfficeCookieOptions : IConfigureNamedOptions<CookieAut
                 // When we then try and renew, the difference of issued and expires effectively becomes the new ExpireTimeSpan
                 // meaning we effectively lose 30 minutes of our ExpireTimeSpan for EVERY principal refresh if we don't
                 // https://github.com/dotnet/aspnetcore/blob/main/src/Security/Authentication/Cookies/src/CookieAuthenticationHandler.cs#L115
-                ctx.Properties.IssuedUtc = _systemClock.UtcNow;
-                ctx.Properties.ExpiresUtc = _systemClock.UtcNow.Add(_globalSettings.TimeOut);
+                ctx.Properties.IssuedUtc = _timeProvider.GetUtcNow();
+                ctx.Properties.ExpiresUtc = _timeProvider.GetUtcNow().Add(_globalSettings.TimeOut);
                 ctx.ShouldRenew = true;
             },
             OnSigningIn = ctx =>
@@ -296,7 +296,7 @@ public class ConfigureBackOfficeCookieOptions : IConfigureNamedOptions<CookieAut
             return;
         }
 
-        DateTimeOffset currentUtc = _systemClock.UtcNow;
+        DateTimeOffset currentUtc = _timeProvider.GetUtcNow();
         DateTimeOffset? issuedUtc = context.Properties.IssuedUtc;
         DateTimeOffset? expiresUtc = context.Properties.ExpiresUtc;
 
diff --git a/src/Umbraco.Web.Common/Security/MemberSecurityStampValidator.cs b/src/Umbraco.Web.Common/Security/MemberSecurityStampValidator.cs
index 3623626112..61781152cd 100644
--- a/src/Umbraco.Web.Common/Security/MemberSecurityStampValidator.cs
+++ b/src/Umbraco.Web.Common/Security/MemberSecurityStampValidator.cs
@@ -14,8 +14,8 @@ public class MemberSecurityStampValidator : SecurityStampValidator<MemberIdentit
 {
     public MemberSecurityStampValidator(
         IOptions<MemberSecurityStampValidatorOptions> options,
-        MemberSignInManager signInManager, ISystemClock clock, ILoggerFactory logger)
-        : base(options, signInManager, clock, logger)
+        MemberSignInManager signInManager, ILoggerFactory logger)
+        : base(options, signInManager, logger)
     {
     }
 
diff --git a/tests/Umbraco.Tests.Integration/TestServerTest/TestAuthHandler.cs b/tests/Umbraco.Tests.Integration/TestServerTest/TestAuthHandler.cs
index 5592d7eded..dd8bb3608a 100644
--- a/tests/Umbraco.Tests.Integration/TestServerTest/TestAuthHandler.cs
+++ b/tests/Umbraco.Tests.Integration/TestServerTest/TestAuthHandler.cs
@@ -27,11 +27,10 @@ public class TestAuthHandler : AuthenticationHandler<AuthenticationSchemeOptions
         IOptionsMonitor<AuthenticationSchemeOptions> options,
         ILoggerFactory logger,
         UrlEncoder encoder,
-        ISystemClock clock,
         IBackOfficeSignInManager backOfficeSignInManager,
         IUserService userService,
         IUmbracoMapper umbracoMapper)
-        : base(options, logger, encoder, clock)
+        : base(options, logger, encoder)
     {
         _backOfficeSignInManager = backOfficeSignInManager;