diff --git a/charts/fluent-operator/values.yaml b/charts/fluent-operator/values.yaml
index 85b24d587..1549e0520 100644
--- a/charts/fluent-operator/values.yaml
+++ b/charts/fluent-operator/values.yaml
@@ -108,7 +108,7 @@ fluentbit:
     registry: ghcr.io
     repository: fluent/fluent-operator/fluent-bit
     # renovate: datasource=docker depName=ghcr.io/fluent/fluent-operator/fluent-bit
-    tag: "4.0.1"
+    tag: "4.0.9"
 
   # fluentbit resources. If you do want to specify resources, adjust them as necessary
   # You can adjust it based on the log volume.
diff --git a/cmd/fluent-watcher/fluentbit/Dockerfile b/cmd/fluent-watcher/fluentbit/Dockerfile
index 95875b1a3..d577314b2 100644
--- a/cmd/fluent-watcher/fluentbit/Dockerfile
+++ b/cmd/fluent-watcher/fluentbit/Dockerfile
@@ -1,4 +1,4 @@
-ARG FLUENT_BIT_BASE_VERSION=3.2.4 \
+ARG FLUENT_BIT_BASE_VERSION=4.0.9 \
     GO_VERSION=1.24.1
 
 FROM golang:${GO_VERSION}-alpine3.21 as buildergo
diff --git a/cmd/fluent-watcher/fluentbit/Dockerfile.debug b/cmd/fluent-watcher/fluentbit/Dockerfile.debug
index afe79b684..23035fe09 100644
--- a/cmd/fluent-watcher/fluentbit/Dockerfile.debug
+++ b/cmd/fluent-watcher/fluentbit/Dockerfile.debug
@@ -1,4 +1,4 @@
-ARG FLUENT_BIT_BASE_VERSION=3.2.4 \
+ARG FLUENT_BIT_BASE_VERSION=4.0.9 \
     GO_VERSION=1.24.1
 
 FROM golang:${GO_VERSION}-alpine3.21 as buildergo
diff --git a/cmd/fluent-watcher/fluentbit/VERSION b/cmd/fluent-watcher/fluentbit/VERSION
index 1454f6ed4..7919852fe 100644
--- a/cmd/fluent-watcher/fluentbit/VERSION
+++ b/cmd/fluent-watcher/fluentbit/VERSION
@@ -1 +1 @@
-4.0.1
+4.0.9