diff --git a/eng/pipelines/templates/jobs/vmr-build.yml b/eng/pipelines/templates/jobs/vmr-build.yml
index 58a38d4c2168..28d20caed157 100644
--- a/eng/pipelines/templates/jobs/vmr-build.yml
+++ b/eng/pipelines/templates/jobs/vmr-build.yml
@@ -227,7 +227,7 @@ jobs:
 
         if [[ $archiveVersionLine =~ $versionPattern ]]; then
           archiveVersion="${BASH_REMATCH[1]}"
-          archiveUrl="https://dotnetcli.azureedge.net/source-built-artifacts/sdks/dotnet-sdk-$archiveVersion-${{ parameters.artifactsRid }}.tar.gz"
+          archiveUrl="https://builds.dotnet.microsoft.com/source-built-artifacts/sdks/dotnet-sdk-$archiveVersion-${{ parameters.artifactsRid }}.tar.gz"
           downloadDir="$(sourcesPath)/prereqs/packages/archive/"
 
           echo "Downloading source-built SDK from $archiveUrl..."
diff --git a/eng/pipelines/templates/variables/vmr-build.yml b/eng/pipelines/templates/variables/vmr-build.yml
index 20b9c3badec1..27c5a7689f1b 100644
--- a/eng/pipelines/templates/variables/vmr-build.yml
+++ b/eng/pipelines/templates/variables/vmr-build.yml
@@ -15,9 +15,9 @@ variables:
 - name: almaLinuxContainer
   value: mcr.microsoft.com/dotnet-buildtools/prereqs:almalinux-8-source-build
 - name: alpineLatestContainer
-  value: mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.20-withnode
+  value: mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.21-amd64
 - name: alpinePreviousContainer
-  value: mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.19-WithNode
+  value: mcr.microsoft.com/dotnet-buildtools/prereqs:alpine-3.20-withnode
 - name: centOSStreamContainer
   value: mcr.microsoft.com/dotnet-buildtools/prereqs:centos-stream9
 - name: fedoraContainer
@@ -50,9 +50,9 @@ variables:
 - name: almaLinuxName
   value: AlmaLinux8
 - name: alpineLatestName
-  value: Alpine320
+  value: Alpine321
 - name: alpinePreviousName
-  value: Alpine319
+  value: Alpine320
 - name: centOSStreamName
   value: CentOSStream9
 - name: fedoraName
@@ -69,9 +69,9 @@ variables:
 - name: linuxMuslArm64Rid
   value: linux-musl-arm64
 - name: alpineLatestX64Rid
-  value: alpine.3.20-x64
+  value: alpine.3.21-x64
 - name: alpinePreviousX64Rid
-  value: alpine.3.19-x64
+  value: alpine.3.20-x64
 - name: centOSStreamX64Rid
   value: centos.9-x64
 - name: fedoraX64Rid
diff --git a/src/SourceBuild/content/prep-source-build.sh b/src/SourceBuild/content/prep-source-build.sh
index 0f4d1d551a03..1af4fe06cf94 100755
--- a/src/SourceBuild/content/prep-source-build.sh
+++ b/src/SourceBuild/content/prep-source-build.sh
@@ -163,7 +163,7 @@ function DownloadArchive {
         archiveRid=$artifactsRid
     fi
 
-    archiveUrl="https://dotnetcli.azureedge.net/source-built-artifacts/assets/Private.SourceBuilt.$archiveType.$archiveVersion.$archiveRid.tar.gz"
+    archiveUrl="https://builds.dotnet.microsoft.com/source-built-artifacts/assets/Private.SourceBuilt.$archiveType.$archiveVersion.$archiveRid.tar.gz"
 
     echo "  Downloading source-built $archiveType from $archiveUrl..."
     (cd "$packagesArchiveDir" && curl -f --retry 5 -O "$archiveUrl")