diff --git a/charts/fluent-bit/CHANGELOG.md b/charts/fluent-bit/CHANGELOG.md
index f4729ca8..6b4bf81c 100644
--- a/charts/fluent-bit/CHANGELOG.md
+++ b/charts/fluent-bit/CHANGELOG.md
@@ -14,6 +14,10 @@
 
 ## [UNRELEASED]
 
+### Changed
+
+- **BREAKING**: Renamed `serviceMonitor.selector` to `serviceMonitor.additionalLabels` for consistency with PrometheusRule configuration. ([#691](https://github.com/fluent/helm-charts/pull/691)) _@kalavt_
+
 ## [v0.55.0] - 2026-01-22
 
 ### Changed
diff --git a/charts/fluent-bit/templates/servicemonitor.yaml b/charts/fluent-bit/templates/servicemonitor.yaml
index 75ba026d..8ab29486 100644
--- a/charts/fluent-bit/templates/servicemonitor.yaml
+++ b/charts/fluent-bit/templates/servicemonitor.yaml
@@ -6,7 +6,7 @@ metadata:
   namespace: {{ default .Release.Namespace .Values.serviceMonitor.namespace }}
   labels:
     {{- include "fluent-bit.labels" . | nindent 4 }}
-    {{- with .Values.serviceMonitor.selector }}
+    {{- with .Values.serviceMonitor.additionalLabels }}
     {{- toYaml . | nindent 4 }}
     {{- end }}
 spec:
diff --git a/charts/fluent-bit/values.yaml b/charts/fluent-bit/values.yaml
index 5de1d0a2..b2ee6dca 100644
--- a/charts/fluent-bit/values.yaml
+++ b/charts/fluent-bit/values.yaml
@@ -121,8 +121,9 @@ serviceMonitor:
   #   namespace: monitoring
   #   interval: 10s
   #   scrapeTimeout: 10s
-  #   selector:
-  #    prometheus: my-prometheus
+  #   additionalLabels:
+  #     prometheus: kube-prometheus
+  #     release: prometheus
   #  ## metric relabel configs to apply to samples before ingestion.
   #  ##
   #  metricRelabelings: