diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 4e4d70c2f1c2..75d3b82b9d9f 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -189,9 +189,9 @@
       <Uri>https://github.com/dotnet/runtime</Uri>
       <Sha>3c48925a6c1ab31865b4438a6cb88242d1a8fe4d</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-externals" Version="8.0.0-alpha.1.23455.1">
+    <Dependency Name="Microsoft.SourceBuild.Intermediate.source-build-externals" Version="8.0.0-alpha.1.23456.1">
       <Uri>https://github.com/dotnet/source-build-externals</Uri>
-      <Sha>80d1c9575b8e2a3c4244fe042e3ee2b662b22ebe</Sha>
+      <Sha>1b64d3c0fad8af67da8f42927ce7306730224c15</Sha>
       <SourceBuild RepoName="source-build-externals" ManagedOnly="true" />
     </Dependency>
     <Dependency Name="Microsoft.SourceBuild.Intermediate.symreader" Version="2.0.0-beta-23228-03">
diff --git a/eng/Versions.props b/eng/Versions.props
index a6d48977159e..7eac5625b697 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -11,7 +11,7 @@
     <AspNetCorePatchVersion>0</AspNetCorePatchVersion>
     <PreReleaseVersionIteration>2</PreReleaseVersionIteration>
     <ValidateBaseline>true</ValidateBaseline>
-    <IdentityModelVersion>7.0.0-preview4</IdentityModelVersion>
+    <IdentityModelVersion>7.0.0-preview5</IdentityModelVersion>
     <!--
         When StabilizePackageVersion is set to 'true', this branch will produce stable outputs for 'Shipping' packages
     -->
@@ -162,7 +162,7 @@
     <MicrosoftDotNetBuildTasksTemplatingVersion>8.0.0-beta.23451.1</MicrosoftDotNetBuildTasksTemplatingVersion>
     <MicrosoftDotNetRemoteExecutorVersion>8.0.0-beta.23451.1</MicrosoftDotNetRemoteExecutorVersion>
     <!-- Packages from dotnet/source-build-externals -->
-    <MicrosoftSourceBuildIntermediatesourcebuildexternalsVersion>8.0.0-alpha.1.23455.1</MicrosoftSourceBuildIntermediatesourcebuildexternalsVersion>
+    <MicrosoftSourceBuildIntermediatesourcebuildexternalsVersion>8.0.0-alpha.1.23456.1</MicrosoftSourceBuildIntermediatesourcebuildexternalsVersion>
     <!-- Packages from dotnet/source-build-reference-packages -->
     <MicrosoftSourceBuildIntermediatesourcebuildreferencepackagesVersion>8.0.0-alpha.1.23451.1</MicrosoftSourceBuildIntermediatesourcebuildreferencepackagesVersion>
     <!-- Packages from dotnet/symreader -->
diff --git a/src/Security/Authentication/test/JwtBearerTests.cs b/src/Security/Authentication/test/JwtBearerTests.cs
index 502afab2db02..bf63ccc7cbd1 100755
--- a/src/Security/Authentication/test/JwtBearerTests.cs
+++ b/src/Security/Authentication/test/JwtBearerTests.cs
@@ -1,6 +1,7 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+using System.Globalization;
 using System.IdentityModel.Tokens.Jwt;
 using System.Net;
 using System.Net.Http;
@@ -958,15 +959,15 @@ public async Task ExpirationAndIssuedSetOnAuthenticateResult()
     }
 
     [Fact]
-    public async Task ExpirationAndIssuedNullWhenMinOrMaxValue()
+    public async Task ExpirationAndIssuedWhenMinOrMaxValue()
     {
         var key = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(new string('a', 128)));
         var creds = new SigningCredentials(key, SecurityAlgorithms.HmacSha256);
 
         var claims = new[]
         {
-                new Claim(ClaimTypes.NameIdentifier, "Bob")
-            };
+            new Claim(ClaimTypes.NameIdentifier, "Bob")
+        };
 
         var token = new JwtSecurityToken(
             issuer: "issuer.contoso.com",
@@ -995,8 +996,18 @@ public async Task ExpirationAndIssuedNullWhenMinOrMaxValue()
         Assert.Equal(HttpStatusCode.OK, response.Response.StatusCode);
         var responseBody = await response.Response.Content.ReadAsStringAsync();
         using var dom = JsonDocument.Parse(responseBody);
-        Assert.Equal(JsonValueKind.Null, dom.RootElement.GetProperty("expires").ValueKind);
         Assert.Equal(JsonValueKind.Null, dom.RootElement.GetProperty("issued").ValueKind);
+
+        var expiresElement = dom.RootElement.GetProperty("expires");
+        Assert.Equal(JsonValueKind.String, expiresElement.ValueKind);
+
+        var elementValue = DateTime.Parse(expiresElement.GetString(), CultureInfo.InvariantCulture);
+        var elementValueUtc = elementValue.ToUniversalTime();
+        // roundtrip DateTime.MaxValue through parsing because it is lossy and we
+        // need equivalent values to compare against.
+        var max = DateTime.Parse(DateTime.MaxValue.ToString(CultureInfo.InvariantCulture), CultureInfo.InvariantCulture);
+
+        Assert.Equal(max, elementValueUtc);
     }
 
     [Fact]