diff --git a/netci.groovy b/netci.groovy
index 33dd3a4a07cd558dd19e4ffd91b7ecf93803774d..8c3bb3e73637ac0f9c0a5be480e23f5e8c23aa92 100644
--- a/netci.groovy
+++ b/netci.groovy
@@ -189,7 +189,7 @@ commitPullList.each { isPr ->
 
   def triggerPhraseOnly = false
   def triggerPhraseExtra = "perf-correctness"
-  Utilities.setMachineAffinity(myJob, 'Windows_NT', 'latest-dev15-3-preview1')
+  Utilities.setMachineAffinity(myJob, 'Windows_NT', 'latest-dev15-3-preview2')
   addRoslynJob(myJob, jobName, branchName, isPr, triggerPhraseExtra, triggerPhraseOnly)
 }
 
@@ -223,7 +223,7 @@ commitPullList.each { isPr ->
 
       def triggerPhraseOnly = false
       def triggerPhraseExtra = ""
-      Utilities.setMachineAffinity(myJob, 'Windows_NT', 'latest-dev15-3-preview1')
+      Utilities.setMachineAffinity(myJob, 'Windows_NT', 'latest-dev15-3-preview2')
       Utilities.addXUnitDotNETResults(myJob, '**/xUnitResults/*.xml')
       addRoslynJob(myJob, jobName, branchName, isPr, triggerPhraseExtra, triggerPhraseOnly)
     }