diff --git a/VERSION b/VERSION
index 7636e75..d13e837 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-4.0.5
+4.0.6
diff --git a/pkg/adapters/common/performance_metrics.go b/pkg/adapters/common/performance_metrics.go
index 6705c72..3b6d4f9 100644
--- a/pkg/adapters/common/performance_metrics.go
+++ b/pkg/adapters/common/performance_metrics.go
@@ -48,6 +48,11 @@
 	}
 }
 
+// UpdateFrequency will update the frequency.
+func (pm *PmMetrics) UpdateFrequency(frequency uint32) {
+	pm.frequency = frequency
+}
+
 func Metrics(pmNames []string) PmMetricsOption {
 	return func(args *PmMetrics) {
 		args.metrics = make(map[string]*voltha.PmConfig)