diff --git a/core/src/layers/mod.rs b/core/src/layers/mod.rs
index cb76475bc3b..1b2d8932b94 100644
--- a/core/src/layers/mod.rs
+++ b/core/src/layers/mod.rs
@@ -67,7 +67,7 @@ pub use self::prometheus::{PrometheusLayer, PrometheusLayerBuilder};
 #[cfg(feature = "layers-prometheus-client")]
 mod prometheus_client;
 #[cfg(feature = "layers-prometheus-client")]
-pub use self::prometheus_client::PrometheusClientLayer;
+pub use self::prometheus_client::{PrometheusClientLayer, PrometheusClientLayerBuilder};
 
 mod retry;
 pub use self::retry::RetryInterceptor;