diff --git a/substrate/client/basic-authorship/src/basic_authorship.rs b/substrate/client/basic-authorship/src/basic_authorship.rs
index c07f3e639c3e..9681b3572c55 100644
--- a/substrate/client/basic-authorship/src/basic_authorship.rs
+++ b/substrate/client/basic-authorship/src/basic_authorship.rs
@@ -173,6 +173,11 @@ impl<A, C, PR> ProposerFactory<A, C, PR> {
 	pub fn set_soft_deadline(&mut self, percent: Percent) {
 		self.soft_deadline_percent = percent;
 	}
+
+	/// Set metrics.
+	pub fn set_metrics(&mut self, metrics: PrometheusMetrics) {
+		self.metrics = metrics;
+	}
 }
 
 impl<Block, C, A, PR> ProposerFactory<A, C, PR>