diff --git a/class/defaults.yml b/class/defaults.yml
index f69f1ea..f62dfbf 100644
--- a/class/defaults.yml
+++ b/class/defaults.yml
@@ -3,6 +3,7 @@ parameters:
     =_metadata:
       multi_instance: true
     namespace: syn-${_instance}
+    namespaceMetadata: {}
 
     host_service_cidr: null
 
diff --git a/component/main.jsonnet b/component/main.jsonnet
index 5c12f7a..5cebe13 100644
--- a/component/main.jsonnet
+++ b/component/main.jsonnet
@@ -10,6 +10,8 @@ local instance = inv.parameters._instance;
 
 // Define outputs below
 {
-  '00_namespace': kube.Namespace(params.namespace),
+  '00_namespace': kube.Namespace(params.namespace) {
+    metadata+: com.makeMergeable(params.namespaceMetadata),
+  },
   '10_cluster': cluster.Cluster(instance, params),
 }
diff --git a/docs/modules/ROOT/pages/references/parameters.adoc b/docs/modules/ROOT/pages/references/parameters.adoc
index a767ca0..4e7aaf6 100644
--- a/docs/modules/ROOT/pages/references/parameters.adoc
+++ b/docs/modules/ROOT/pages/references/parameters.adoc
@@ -14,6 +14,24 @@ The namespace in which to deploy this component.
 
 Deploying multiple vclusters in the same namespace isn't supported.
 
+
+== `namespaceMetadata`
+
+[horizontal]
+type:: dictionary
+default:: `{}`
+example::
++
+[source,yaml]
+----
+namespace:
+  annotations:
+    prometheus: infra
+----
+
+Additional metadata for the namespace.
+
+
 == `host_service_cidr`
 
 [horizontal]
diff --git a/tests/golden/openshift/openshift/openshift/00_namespace.yaml b/tests/golden/openshift/openshift/openshift/00_namespace.yaml
index e6958f6..7529faa 100644
--- a/tests/golden/openshift/openshift/openshift/00_namespace.yaml
+++ b/tests/golden/openshift/openshift/openshift/00_namespace.yaml
@@ -1,7 +1,8 @@
 apiVersion: v1
 kind: Namespace
 metadata:
-  annotations: {}
+  annotations:
+    openshift.io/cluster-monitoring: 'true'
   labels:
     name: syn-openshift
   name: syn-openshift
diff --git a/tests/openshift.yml b/tests/openshift.yml
index 31578dc..8991947 100644
--- a/tests/openshift.yml
+++ b/tests/openshift.yml
@@ -3,6 +3,9 @@ parameters:
     host_service_cidr: 172.30.0.0/16
     ocp_route:
       host: test.apps.local
+    namespaceMetadata:
+      annotations:
+        openshift.io/cluster-monitoring: "true"
 
   facts:
     distribution: openshift4