diff --git a/promk/prometheus/prometheus-corp.yml b/promk/prometheus/prometheus-corp.yml
index c36d427..dc94243 100644
--- a/promk/prometheus/prometheus-corp.yml
+++ b/promk/prometheus/prometheus-corp.yml
@@ -1,8 +1,6 @@
 global:
   scrape_interval: 15s
   evaluation_interval: 15s
-  external_labels:
-    project: skia-corp
 
 rule_files:
   - "alerts_corp.yml"
@@ -160,3 +158,6 @@
       - source_labels: [__meta_kubernetes_pod_name]
         action: replace
         target_label: kubernetes_pod_name
+      - action: replace
+        target_label: project
+        replacement: skia-corp
diff --git a/promk/prometheus/prometheus-public.yml b/promk/prometheus/prometheus-public.yml
index ac50d47..508b6f4 100644
--- a/promk/prometheus/prometheus-public.yml
+++ b/promk/prometheus/prometheus-public.yml
@@ -1,8 +1,6 @@
 global:
   scrape_interval: 15s
   evaluation_interval: 15s
-  external_labels:
-    project: skia-public
 
 rule_files:
   - "alerts_public.yml"
@@ -169,3 +167,6 @@
       - source_labels: [__meta_kubernetes_pod_name]
         action: replace
         target_label: kubernetes_pod_name
+      - action: replace
+        target_label: project
+        replacement: skia-public