diff --git a/.vsts-ci.yml b/.vsts-ci.yml
index 52847992578e..bee286311814 100644
--- a/.vsts-ci.yml
+++ b/.vsts-ci.yml
@@ -61,8 +61,8 @@ extends:
     template: v1/1ES.Unofficial.PipelineTemplate.yml@1esPipelines
   parameters:
     containers:
-      fedora39:
-        image: mcr.microsoft.com/dotnet-buildtools/prereqs:fedora-39
+      fedora40:
+        image: mcr.microsoft.com/dotnet-buildtools/prereqs:fedora-40
     sdl:
       sourceAnalysisPool:
         name: $(DncEngInternalBuildPool)
diff --git a/src/SourceBuild/Arcade/eng/common/templates/job/source-build-create-tarball.yml b/src/SourceBuild/Arcade/eng/common/templates/job/source-build-create-tarball.yml
index d9df2e4e523e..8b5b456b662c 100644
--- a/src/SourceBuild/Arcade/eng/common/templates/job/source-build-create-tarball.yml
+++ b/src/SourceBuild/Arcade/eng/common/templates/job/source-build-create-tarball.yml
@@ -2,7 +2,7 @@
 
 jobs:
 - job: Source_Build_Create_Tarball
-  container: fedora39
+  container: fedora40
   displayName: Source-Build Create Tarball
   pool:
     ${{ if eq(variables['System.TeamProject'], 'public') }}:
diff --git a/src/SourceBuild/Arcade/eng/common/templates/job/source-build-run-tarball-build-pr.yml b/src/SourceBuild/Arcade/eng/common/templates/job/source-build-run-tarball-build-pr.yml
index dde2f3a8e1a5..bab6fc642b53 100644
--- a/src/SourceBuild/Arcade/eng/common/templates/job/source-build-run-tarball-build-pr.yml
+++ b/src/SourceBuild/Arcade/eng/common/templates/job/source-build-run-tarball-build-pr.yml
@@ -12,7 +12,7 @@ parameters:
   alpine317Container: mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.17
   centOS7Container: mcr.microsoft.com/dotnet-buildtools/prereqs:centos-7-source-build
   centOSStream9Container: mcr.microsoft.com/dotnet-buildtools/prereqs:centos-stream9
-  fedora39Container: mcr.microsoft.com/dotnet-buildtools/prereqs:fedora-39
+  fedora40Container: mcr.microsoft.com/dotnet-buildtools/prereqs:fedora-40
   ubuntu2004Arm64Container: mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-20.04-arm64
   poolInternalAmd64:
     name: NetCore1ESPool-Svc-Internal
@@ -63,9 +63,9 @@ jobs:
           _ExcludeOmniSharpTests: false
           _OverrideDistroDisablingSha1: true
           _RunOnline: false
-        Fedora39-Offline:
+        fedora40-Offline:
           _BootstrapPrep: false
-          _Container: ${{ parameters.fedora39Container }}
+          _Container: ${{ parameters.fedora40Container }}
           _EnablePoison: true
           _ExcludeOmniSharpTests: false
           _OverrideDistroDisablingSha1: false
@@ -108,9 +108,9 @@ jobs:
       excludeSdkContentTests: true
       installerBuildResourceId: ${{ parameters.installerBuildResourceId }}
       matrix:
-        Fedora39-Offline:
-          _PreviousSourceBuildArtifact: Build_Tarball_x64 Fedora39-Offline_Artifacts
-          _Container: ${{ parameters.fedora39Container }}
+        fedora40-Offline:
+          _PreviousSourceBuildArtifact: Build_Tarball_x64 fedora40-Offline_Artifacts
+          _Container: ${{ parameters.fedora40Container }}
           _EnablePoison: false
           _ExcludeOmniSharpTests: false
           _OverrideDistroDisablingSha1: false
diff --git a/src/SourceBuild/Arcade/eng/common/templates/job/source-build-run-tarball-build.yml b/src/SourceBuild/Arcade/eng/common/templates/job/source-build-run-tarball-build.yml
index b52bdf80c6ba..d89a7c3aa2a8 100644
--- a/src/SourceBuild/Arcade/eng/common/templates/job/source-build-run-tarball-build.yml
+++ b/src/SourceBuild/Arcade/eng/common/templates/job/source-build-run-tarball-build.yml
@@ -12,7 +12,7 @@ parameters:
   alpine317Container: mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.17
   centOS7Container: mcr.microsoft.com/dotnet-buildtools/prereqs:centos-7-source-build
   centOSStream9Container: mcr.microsoft.com/dotnet-buildtools/prereqs:centos-stream9
-  fedora39Container: mcr.microsoft.com/dotnet-buildtools/prereqs:fedora-39
+  fedora40Container: mcr.microsoft.com/dotnet-buildtools/prereqs:fedora-40
   ubuntu2004Arm64Container: mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-20.04-arm64
   poolInternalAmd64:
     name: NetCore1ESPool-Svc-Internal
@@ -69,9 +69,9 @@ jobs:
           _ExcludeOmniSharpTests: false
           _OverrideDistroDisablingSha1: true
           _RunOnline: false
-        Fedora39-Offline:
+        fedora40-Offline:
           _BootstrapPrep: false
-          _Container: ${{ parameters.fedora39Container }}
+          _Container: ${{ parameters.fedora40Container }}
           _EnablePoison: true
           _ExcludeOmniSharpTests: false
           _OverrideDistroDisablingSha1: false
@@ -114,9 +114,9 @@ jobs:
       excludeSdkContentTests: true
       installerBuildResourceId: ${{ parameters.installerBuildResourceId }}
       matrix:
-        Fedora39-Offline:
-          _PreviousSourceBuildArtifact: Build_Tarball_x64 Fedora39-Offline_Artifacts
-          _Container: ${{ parameters.fedora39Container }}
+        fedora40-Offline:
+          _PreviousSourceBuildArtifact: Build_Tarball_x64 fedora40-Offline_Artifacts
+          _Container: ${{ parameters.fedora40Container }}
           _EnablePoison: false
           _ExcludeOmniSharpTests: false
           _OverrideDistroDisablingSha1: false
diff --git a/src/SourceBuild/tarball/content/test/Microsoft.DotNet.SourceBuild.SmokeTests/assets/baselines/MsftToSbSdk.diff b/src/SourceBuild/tarball/content/test/Microsoft.DotNet.SourceBuild.SmokeTests/assets/baselines/MsftToSbSdk.diff
index 537b03e4f2bb..6d3d215c4b7c 100644
--- a/src/SourceBuild/tarball/content/test/Microsoft.DotNet.SourceBuild.SmokeTests/assets/baselines/MsftToSbSdk.diff
+++ b/src/SourceBuild/tarball/content/test/Microsoft.DotNet.SourceBuild.SmokeTests/assets/baselines/MsftToSbSdk.diff
@@ -14,7 +14,20 @@ index ------------
  ./packs/Microsoft.AspNetCore.App.Ref/
  ./packs/Microsoft.AspNetCore.App.Ref/x.y.z/
 @@ ------------ @@
+ ./packs/Microsoft.AspNetCore.App.Ref/x.y.z/ref/netx.y/Microsoft.JSInterop.xml
+ ./packs/Microsoft.AspNetCore.App.Ref/x.y.z/ref/netx.y/Microsoft.Net.Http.Headers.dll
+ ./packs/Microsoft.AspNetCore.App.Ref/x.y.z/ref/netx.y/Microsoft.Net.Http.Headers.xml
++./packs/Microsoft.AspNetCore.App.Ref/x.y.z/ref/netx.y/System.Diagnostics.DiagnosticSource.dll
++./packs/Microsoft.AspNetCore.App.Ref/x.y.z/ref/netx.y/System.Diagnostics.DiagnosticSource.xml
+ ./packs/Microsoft.AspNetCore.App.Ref/x.y.z/ref/netx.y/System.Diagnostics.EventLog.dll
+ ./packs/Microsoft.AspNetCore.App.Ref/x.y.z/ref/netx.y/System.Diagnostics.EventLog.xml
++./packs/Microsoft.AspNetCore.App.Ref/x.y.z/ref/netx.y/System.Formats.Asn1.dll
++./packs/Microsoft.AspNetCore.App.Ref/x.y.z/ref/netx.y/System.Formats.Asn1.xml
+ ./packs/Microsoft.AspNetCore.App.Ref/x.y.z/ref/netx.y/System.IO.Pipelines.dll
  ./packs/Microsoft.AspNetCore.App.Ref/x.y.z/ref/netx.y/System.IO.Pipelines.xml
++./packs/Microsoft.AspNetCore.App.Ref/x.y.z/ref/netx.y/System.Runtime.CompilerServices.Unsafe.dll
++./packs/Microsoft.AspNetCore.App.Ref/x.y.z/ref/netx.y/System.Security.AccessControl.dll
++./packs/Microsoft.AspNetCore.App.Ref/x.y.z/ref/netx.y/System.Security.AccessControl.xml
  ./packs/Microsoft.AspNetCore.App.Ref/x.y.z/ref/netx.y/System.Security.Cryptography.Xml.dll
  ./packs/Microsoft.AspNetCore.App.Ref/x.y.z/ref/netx.y/System.Security.Cryptography.Xml.xml
 -./packs/Microsoft.NETCore.App.Host.portable-rid/
@@ -29,6 +42,10 @@ index ------------
 -./packs/Microsoft.NETCore.App.Host.portable-rid/x.y.z/runtimes/portable-rid/native/libnethost.so
 -./packs/Microsoft.NETCore.App.Host.portable-rid/x.y.z/runtimes/portable-rid/native/nethost.h
 -./packs/Microsoft.NETCore.App.Host.portable-rid/x.y.z/runtimes/portable-rid/native/singlefilehost
++./packs/Microsoft.AspNetCore.App.Ref/x.y.z/ref/netx.y/System.Text.Encodings.Web.dll
++./packs/Microsoft.AspNetCore.App.Ref/x.y.z/ref/netx.y/System.Text.Encodings.Web.xml
++./packs/Microsoft.AspNetCore.App.Ref/x.y.z/ref/netx.y/System.Text.Json.dll
++./packs/Microsoft.AspNetCore.App.Ref/x.y.z/ref/netx.y/System.Text.Json.xml
 +./packs/Microsoft.NETCore.App.Host.banana-rid/
 +./packs/Microsoft.NETCore.App.Host.banana-rid/x.y.z/
 +./packs/Microsoft.NETCore.App.Host.banana-rid/x.y.z/runtimes/