diff --git a/jsonnet/kube-prometheus/alertmanager/alertmanager.libsonnet b/jsonnet/kube-prometheus/alertmanager/alertmanager.libsonnet
index c28eb7650df2bbaaeaa71c8099bff73ec4ad05ce..635f34eb66766e7c9b4dee4441178d3dddf89bd7 100644
--- a/jsonnet/kube-prometheus/alertmanager/alertmanager.libsonnet
+++ b/jsonnet/kube-prometheus/alertmanager/alertmanager.libsonnet
@@ -19,7 +19,7 @@ local k = import 'ksonnet/ksonnet.beta.4/k.libsonnet';
           resolve_timeout: '5m',
         },
         route: {
-          group_by: ['job'],
+          group_by: ['namespace'],
           group_wait: '30s',
           group_interval: '5m',
           repeat_interval: '12h',
diff --git a/jsonnetfile.lock.json b/jsonnetfile.lock.json
index 6cbd0aae4bddef693029250575f015fcf52d9fc4..d97e7f93b581ae7af37bf2e590fcaa6d9903ce49 100644
--- a/jsonnetfile.lock.json
+++ b/jsonnetfile.lock.json
@@ -26,7 +26,7 @@
       "name": "grafana-builder",
       "source": {
         "git": {
-          "remote": "https://github.com/kausalco/public",
+          "remote": "https://github.com/grafana/jsonnet-libs",
           "subdir": "grafana-builder"
         }
       },
diff --git a/manifests/alertmanager-secret.yaml b/manifests/alertmanager-secret.yaml
index cdfe51c7fe2c8ce401a8191ff3b5dd24b8957314..e9fb9f7d7abfdd6c7462f253c71a87f3cf9195a2 100644
--- a/manifests/alertmanager-secret.yaml
+++ b/manifests/alertmanager-secret.yaml
@@ -1,6 +1,6 @@
 apiVersion: v1
 data:
-  alertmanager.yaml: Imdsb2JhbCI6CiAgInJlc29sdmVfdGltZW91dCI6ICI1bSIKInJlY2VpdmVycyI6Ci0gIm5hbWUiOiAibnVsbCIKInJvdXRlIjoKICAiZ3JvdXBfYnkiOgogIC0gImpvYiIKICAiZ3JvdXBfaW50ZXJ2YWwiOiAiNW0iCiAgImdyb3VwX3dhaXQiOiAiMzBzIgogICJyZWNlaXZlciI6ICJudWxsIgogICJyZXBlYXRfaW50ZXJ2YWwiOiAiMTJoIgogICJyb3V0ZXMiOgogIC0gIm1hdGNoIjoKICAgICAgImFsZXJ0bmFtZSI6ICJXYXRjaGRvZyIKICAgICJyZWNlaXZlciI6ICJudWxsIg==
+  alertmanager.yaml: Imdsb2JhbCI6CiAgInJlc29sdmVfdGltZW91dCI6ICI1bSIKInJlY2VpdmVycyI6Ci0gIm5hbWUiOiAibnVsbCIKInJvdXRlIjoKICAiZ3JvdXBfYnkiOgogIC0gIm5hbWVzcGFjZSIKICAiZ3JvdXBfaW50ZXJ2YWwiOiAiNW0iCiAgImdyb3VwX3dhaXQiOiAiMzBzIgogICJyZWNlaXZlciI6ICJudWxsIgogICJyZXBlYXRfaW50ZXJ2YWwiOiAiMTJoIgogICJyb3V0ZXMiOgogIC0gIm1hdGNoIjoKICAgICAgImFsZXJ0bmFtZSI6ICJXYXRjaGRvZyIKICAgICJyZWNlaXZlciI6ICJudWxsIg==
 kind: Secret
 metadata:
   name: alertmanager-main