diff --git a/.buildkite/pipeline.yml b/.buildkite/pipeline.yml
index 506e8f29607c..66cf5de834b8 100644
--- a/.buildkite/pipeline.yml
+++ b/.buildkite/pipeline.yml
@@ -1,3 +1,6 @@
+# Most of the steps need to run on a macOS agent, so let's define it as a root property.
+agents:
+  queue: mac
 env:
   IMAGE_ID: $IMAGE_ID
 
diff --git a/.buildkite/release-builds.yml b/.buildkite/release-builds.yml
index 5e693dbaee40..034d0e4dea72 100644
--- a/.buildkite/release-builds.yml
+++ b/.buildkite/release-builds.yml
@@ -1,5 +1,7 @@
 # This pipeline is meant to be run via the Buildkite API, and is only used for release builds
 
+agents:
+  queue: mac
 env:
   IMAGE_ID: $IMAGE_ID