diff --git a/CHANGELOG.md b/CHANGELOG.md
index c632637743..5d30049ce0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## Unreleased
 
+### Changed
+
+- Update Splunk Fluend HEC docker image to v1.3.3 [#924](https://github.com/signalfx/splunk-otel-collector-chart/pull/924)
+
 ## [0.84.0] - 2023-09-11
 
 ### Changed
diff --git a/examples/add-filter-processor/rendered_manifests/daemonset.yaml b/examples/add-filter-processor/rendered_manifests/daemonset.yaml
index bc93fbb86f..7a2bdda7b6 100644
--- a/examples/add-filter-processor/rendered_manifests/daemonset.yaml
+++ b/examples/add-filter-processor/rendered_manifests/daemonset.yaml
@@ -46,7 +46,7 @@ spec:
           key: node-role.kubernetes.io/control-plane
       initContainers:
         - name: prepare-fluentd-config
-          image: splunk/fluentd-hec:1.2.8
+          image: splunk/fluentd-hec:1.3.3
           imagePullPolicy: IfNotPresent
           command: [ "sh", "-c"]
           securityContext:
@@ -75,7 +75,7 @@ spec:
               mountPath: /fluentd/etc/json
       containers:
       - name: fluentd
-        image: splunk/fluentd-hec:1.2.8
+        image: splunk/fluentd-hec:1.3.3
         imagePullPolicy: IfNotPresent
         securityContext:
           
diff --git a/examples/add-kafkametrics-receiver/rendered_manifests/daemonset.yaml b/examples/add-kafkametrics-receiver/rendered_manifests/daemonset.yaml
index 6673fbdcb2..4ff20a5d9c 100644
--- a/examples/add-kafkametrics-receiver/rendered_manifests/daemonset.yaml
+++ b/examples/add-kafkametrics-receiver/rendered_manifests/daemonset.yaml
@@ -46,7 +46,7 @@ spec:
           key: node-role.kubernetes.io/control-plane
       initContainers:
         - name: prepare-fluentd-config
-          image: splunk/fluentd-hec:1.2.8
+          image: splunk/fluentd-hec:1.3.3
           imagePullPolicy: IfNotPresent
           command: [ "sh", "-c"]
           securityContext:
@@ -75,7 +75,7 @@ spec:
               mountPath: /fluentd/etc/json
       containers:
       - name: fluentd
-        image: splunk/fluentd-hec:1.2.8
+        image: splunk/fluentd-hec:1.3.3
         imagePullPolicy: IfNotPresent
         securityContext:
           
diff --git a/examples/autodetect-istio/rendered_manifests/daemonset.yaml b/examples/autodetect-istio/rendered_manifests/daemonset.yaml
index b0d3a71321..b5c5dcb7e8 100644
--- a/examples/autodetect-istio/rendered_manifests/daemonset.yaml
+++ b/examples/autodetect-istio/rendered_manifests/daemonset.yaml
@@ -47,7 +47,7 @@ spec:
           key: node-role.kubernetes.io/control-plane
       initContainers:
         - name: prepare-fluentd-config
-          image: splunk/fluentd-hec:1.2.8
+          image: splunk/fluentd-hec:1.3.3
           imagePullPolicy: IfNotPresent
           command: [ "sh", "-c"]
           securityContext:
@@ -76,7 +76,7 @@ spec:
               mountPath: /fluentd/etc/json
       containers:
       - name: fluentd
-        image: splunk/fluentd-hec:1.2.8
+        image: splunk/fluentd-hec:1.3.3
         imagePullPolicy: IfNotPresent
         securityContext:
           
diff --git a/examples/enable-operator-and-auto-instrumentation/rendered_manifests/daemonset.yaml b/examples/enable-operator-and-auto-instrumentation/rendered_manifests/daemonset.yaml
index 08df445612..75970ef4d7 100644
--- a/examples/enable-operator-and-auto-instrumentation/rendered_manifests/daemonset.yaml
+++ b/examples/enable-operator-and-auto-instrumentation/rendered_manifests/daemonset.yaml
@@ -46,7 +46,7 @@ spec:
           key: node-role.kubernetes.io/control-plane
       initContainers:
         - name: prepare-fluentd-config
-          image: splunk/fluentd-hec:1.2.8
+          image: splunk/fluentd-hec:1.3.3
           imagePullPolicy: IfNotPresent
           command: [ "sh", "-c"]
           securityContext:
@@ -75,7 +75,7 @@ spec:
               mountPath: /fluentd/etc/json
       containers:
       - name: fluentd
-        image: splunk/fluentd-hec:1.2.8
+        image: splunk/fluentd-hec:1.3.3
         imagePullPolicy: IfNotPresent
         securityContext:
           
diff --git a/examples/fluentd-multiline-logs-java-stack-traces/rendered_manifests/daemonset.yaml b/examples/fluentd-multiline-logs-java-stack-traces/rendered_manifests/daemonset.yaml
index 9773b7141d..7902f20fcf 100644
--- a/examples/fluentd-multiline-logs-java-stack-traces/rendered_manifests/daemonset.yaml
+++ b/examples/fluentd-multiline-logs-java-stack-traces/rendered_manifests/daemonset.yaml
@@ -46,7 +46,7 @@ spec:
           key: node-role.kubernetes.io/control-plane
       initContainers:
         - name: prepare-fluentd-config
-          image: splunk/fluentd-hec:1.2.8
+          image: splunk/fluentd-hec:1.3.3
           imagePullPolicy: IfNotPresent
           command: [ "sh", "-c"]
           securityContext:
@@ -75,7 +75,7 @@ spec:
               mountPath: /fluentd/etc/json
       containers:
       - name: fluentd
-        image: splunk/fluentd-hec:1.2.8
+        image: splunk/fluentd-hec:1.3.3
         imagePullPolicy: IfNotPresent
         securityContext:
           
diff --git a/examples/only-logs-fluentd/rendered_manifests/daemonset.yaml b/examples/only-logs-fluentd/rendered_manifests/daemonset.yaml
index 8778dae4d8..5c71b063b4 100644
--- a/examples/only-logs-fluentd/rendered_manifests/daemonset.yaml
+++ b/examples/only-logs-fluentd/rendered_manifests/daemonset.yaml
@@ -46,7 +46,7 @@ spec:
           key: node-role.kubernetes.io/control-plane
       initContainers:
         - name: prepare-fluentd-config
-          image: splunk/fluentd-hec:1.2.8
+          image: splunk/fluentd-hec:1.3.3
           imagePullPolicy: IfNotPresent
           command: [ "sh", "-c"]
           securityContext:
@@ -75,7 +75,7 @@ spec:
               mountPath: /fluentd/etc/json
       containers:
       - name: fluentd
-        image: splunk/fluentd-hec:1.2.8
+        image: splunk/fluentd-hec:1.3.3
         imagePullPolicy: IfNotPresent
         securityContext:
           
diff --git a/examples/splunk-enterprise-index-routing/rendered_manifests/daemonset.yaml b/examples/splunk-enterprise-index-routing/rendered_manifests/daemonset.yaml
index f95e1b120e..7b45cdf883 100644
--- a/examples/splunk-enterprise-index-routing/rendered_manifests/daemonset.yaml
+++ b/examples/splunk-enterprise-index-routing/rendered_manifests/daemonset.yaml
@@ -46,7 +46,7 @@ spec:
           key: node-role.kubernetes.io/control-plane
       initContainers:
         - name: prepare-fluentd-config
-          image: splunk/fluentd-hec:1.2.8
+          image: splunk/fluentd-hec:1.3.3
           imagePullPolicy: IfNotPresent
           command: [ "sh", "-c"]
           securityContext:
@@ -75,7 +75,7 @@ spec:
               mountPath: /fluentd/etc/json
       containers:
       - name: fluentd
-        image: splunk/fluentd-hec:1.2.8
+        image: splunk/fluentd-hec:1.3.3
         imagePullPolicy: IfNotPresent
         securityContext:
           
diff --git a/helm-charts/splunk-otel-collector/values.yaml b/helm-charts/splunk-otel-collector/values.yaml
index c30afccdfe..e95deea187 100644
--- a/helm-charts/splunk-otel-collector/values.yaml
+++ b/helm-charts/splunk-otel-collector/values.yaml
@@ -913,7 +913,7 @@ image:
     # The registry and name of the fluentd image to pull
     repository: splunk/fluentd-hec
     # The tag of the fluentd image to pull
-    tag: 1.2.8
+    tag: 1.3.3
     # The policy that specifies when the user wants the fluentd images to be pulled
     pullPolicy: IfNotPresent