diff --git a/scripts/azure-pipelines/windows-unstable/azure-pipelines.yml b/scripts/azure-pipelines/windows-unstable/azure-pipelines.yml
index 189ab31acd..65ee8decfc 100644
--- a/scripts/azure-pipelines/windows-unstable/azure-pipelines.yml
+++ b/scripts/azure-pipelines/windows-unstable/azure-pipelines.yml
@@ -2,7 +2,7 @@
 # SPDX-License-Identifier: MIT
 #
 variables:
-  unstable-pool: 'VcpkgUnstable-2020-09-01'
+  unstable-pool: 'VcpkgUnstable1ES'
 
 jobs:
 - template: job.yml