diff --git a/jsonnet/kube-prometheus/components/prometheus.libsonnet b/jsonnet/kube-prometheus/components/prometheus.libsonnet
index 3b7f5221de76b35e065bf18eb88b46a917785469..72d5019cd5090f1b5dd89f24bd0357c826ff2902 100644
--- a/jsonnet/kube-prometheus/components/prometheus.libsonnet
+++ b/jsonnet/kube-prometheus/components/prometheus.libsonnet
@@ -175,7 +175,10 @@ function(params) {
              ] +
              (
                if p._config.thanos != null then
-                 [{ name: 'grpc', port: 10901, targetPort: 10901 }]
+                 [
+                   { name: 'grpc', port: 10901, targetPort: 10901 },
+                   { name: 'http', port: 10902, targetPort: 10902 },
+                 ]
                else []
              ),
       selector: p._config.selectorLabels,