diff --git a/eng/pipelines/helix-platforms.yml b/eng/pipelines/helix-platforms.yml
index e1ddcef6681bd8..9c699e5f1a8160 100644
--- a/eng/pipelines/helix-platforms.yml
+++ b/eng/pipelines/helix-platforms.yml
@@ -97,10 +97,10 @@ variables:
 
   # Oldest: Ubuntu 22.04
   - name: helix_linux_x64_oldest
-    value: Ubuntu.2204.Amd64.Open
+    value: (Ubuntu.2204.Amd64.Open)AzureLinux.3.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-22.04-helix-amd64
 
   - name: helix_linux_x64_oldest_internal
-    value: Ubuntu.2204.Amd64
+    value: (Ubuntu.2204.Amd64)AzureLinux.3.Amd64@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-22.04-helix-amd64
 
   # Ubuntu x64
   # Latest: 26.04
@@ -109,7 +109,7 @@ variables:
 
   # Oldest: 22.04
   - name: helix_linux_x64_ubuntu_oldest
-    value: Ubuntu.2204.Amd64.Open
+    value: (Ubuntu.2204.Amd64.Open)AzureLinux.3.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-22.04-helix-amd64
 
   # Debian x64
   # Latest: 13
@@ -169,7 +169,7 @@ variables:
 
   # Oldest: Ubuntu 22.04
   - name: helix_linux_arm64_oldest
-    value: Ubuntu.2204.ArmArch.Open
+    value: (Ubuntu.2204.ArmArch.Open)AzureLinux.3.Arm64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-22.04-helix-arm64v8
 
   # Linux musl x64
   # Latest: Alpine edge
diff --git a/eng/pipelines/libraries/helix-queues-setup.yml b/eng/pipelines/libraries/helix-queues-setup.yml
index 917aff5765487c..e883b1756f0fe8 100644
--- a/eng/pipelines/libraries/helix-queues-setup.yml
+++ b/eng/pipelines/libraries/helix-queues-setup.yml
@@ -56,15 +56,14 @@ jobs:
       - ${{ else }}:
         - ${{ if eq(parameters.jobParameters.runtimeFlavor, 'mono') }}:
           # Mono path - test minimal scenario
-          - Ubuntu.2204.Amd64.Open
+          - (Ubuntu.2604.Amd64.Open)AzureLinux.3.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-26.04-helix-amd64
         - ${{ else }}:
         # CoreCLR path
           - ${{ if and(eq(parameters.jobParameters.isExtraPlatformsBuild, true), ne(parameters.jobParameters.testScope, 'outerloop'))}}:
             # extra-platforms CoreCLR (inner loop only)
             - (Debian.13.Amd64.Open)AzureLinux.3.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:debian-13-helix-amd64
-            - (Fedora.43.Amd64.Open)AzureLinux.3.Amd64.open@mcr.microsoft.com/dotnet-buildtools/prereqs:fedora-43-helix-amd64
-            - (openSUSE.16.0.Amd64.Open)AzureLinux.3.Amd64.open@mcr.microsoft.com/dotnet-buildtools/prereqs:opensuse-16.0-helix-amd64
-            - (Ubuntu.2604.Amd64.Open)AzureLinux.3.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-26.04-helix-amd64
+            - (Fedora.43.Amd64.Open)AzureLinux.3.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:fedora-43-helix-amd64
+            - (openSUSE.16.0.Amd64.Open)AzureLinux.3.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:opensuse-16.0-helix-amd64
 
           - ${{ if eq(parameters.jobParameters.testScope, 'outerloop') }}:
               # outerloop only CoreCLR
@@ -72,8 +71,8 @@ jobs:
 
           - ${{ if or(ne(parameters.jobParameters.isExtraPlatformsBuild, true), eq(parameters.jobParameters.includeAllPlatforms, true))}}:
               # inner and outer loop CoreCLR (general set)
-              - Ubuntu.2204.Amd64.Open
-              - (AzureLinux.3.0.Amd64.Open)AzureLinux.3.Amd64.open@mcr.microsoft.com/dotnet-buildtools/prereqs:azurelinux-3.0-helix-amd64
+              - (Ubuntu.2604.Amd64.Open)AzureLinux.3.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:ubuntu-26.04-helix-amd64
+              - (AzureLinux.3.0.Amd64.Open)AzureLinux.3.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:azurelinux-3.0-helix-amd64
               - (Centos.10.Amd64.Open)AzureLinux.3.Amd64.Open@mcr.microsoft.com/dotnet-buildtools/prereqs:centos-stream-10-helix-amd64
 
     # OSX arm64