diff --git a/libcxx/utils/ci/buildkite-pipeline.yml b/libcxx/utils/ci/buildkite-pipeline.yml
--- a/libcxx/utils/ci/buildkite-pipeline.yml
+++ b/libcxx/utils/ci/buildkite-pipeline.yml
@@ -276,8 +276,8 @@
         - exit_status: -1  # Agent was lost
           limit: 2
 
-  - label: "Apple back-deployment macosx10.14"
-    command: "libcxx/utils/ci/run-buildbot x86_64-apple-system-backdeployment-10.14"
+  - label: "Apple back-deployment macosx10.15"
+    command: "libcxx/utils/ci/run-buildbot x86_64-apple-system-backdeployment-10.15"
     artifact_paths:
       - "**/test-results.xml"
     agents: