diff --git a/demos/logging/zookeeper.yaml b/demos/logging/zookeeper.yaml
index 6145cfbc..fe410b91 100644
--- a/demos/logging/zookeeper.yaml
+++ b/demos/logging/zookeeper.yaml
@@ -5,7 +5,7 @@ metadata:
   name: simple-zk
 spec:
   image:
-    productVersion: 3.9.3
+    productVersion: 3.9.4
   clusterConfig:
     vectorAggregatorConfigMapName: vector-aggregator-discovery
   servers:
diff --git a/stacks/data-lakehouse-iceberg-trino-spark/zookeeper.yaml b/stacks/data-lakehouse-iceberg-trino-spark/zookeeper.yaml
index 5894c44a..90e543bb 100644
--- a/stacks/data-lakehouse-iceberg-trino-spark/zookeeper.yaml
+++ b/stacks/data-lakehouse-iceberg-trino-spark/zookeeper.yaml
@@ -5,7 +5,7 @@ metadata:
   name: zookeeper
 spec:
   image:
-    productVersion: 3.9.3
+    productVersion: 3.9.4
   servers:
     roleGroups:
       default:
diff --git a/stacks/dual-hive-hdfs-s3/hdfs.yaml b/stacks/dual-hive-hdfs-s3/hdfs.yaml
index 551525c6..cb689eba 100644
--- a/stacks/dual-hive-hdfs-s3/hdfs.yaml
+++ b/stacks/dual-hive-hdfs-s3/hdfs.yaml
@@ -5,7 +5,7 @@ metadata:
   name: hdfs-zk
 spec:
   image:
-    productVersion: 3.9.3
+    productVersion: 3.9.4
   servers:
     roleGroups:
       default:
diff --git a/stacks/end-to-end-security/zookeeper.yaml b/stacks/end-to-end-security/zookeeper.yaml
index b5702030..70c43c80 100644
--- a/stacks/end-to-end-security/zookeeper.yaml
+++ b/stacks/end-to-end-security/zookeeper.yaml
@@ -5,7 +5,7 @@ metadata:
   name: zookeeper
 spec:
   image:
-    productVersion: 3.9.3
+    productVersion: 3.9.4
   servers:
     roleGroups:
       default:
diff --git a/stacks/hdfs-hbase/zookeeper.yaml b/stacks/hdfs-hbase/zookeeper.yaml
index 10fe69c2..6a497fb3 100644
--- a/stacks/hdfs-hbase/zookeeper.yaml
+++ b/stacks/hdfs-hbase/zookeeper.yaml
@@ -5,7 +5,7 @@ metadata:
   name: zookeeper
 spec:
   image:
-    productVersion: 3.9.3
+    productVersion: 3.9.4
   servers:
     roleGroups:
       default:
diff --git a/stacks/jupyterhub-pyspark-hdfs/zookeeper.yaml b/stacks/jupyterhub-pyspark-hdfs/zookeeper.yaml
index b5702030..70c43c80 100644
--- a/stacks/jupyterhub-pyspark-hdfs/zookeeper.yaml
+++ b/stacks/jupyterhub-pyspark-hdfs/zookeeper.yaml
@@ -5,7 +5,7 @@ metadata:
   name: zookeeper
 spec:
   image:
-    productVersion: 3.9.3
+    productVersion: 3.9.4
   servers:
     roleGroups:
       default:
diff --git a/stacks/keycloak-opa-poc/zookeeper.yaml b/stacks/keycloak-opa-poc/zookeeper.yaml
index 04bc6bd2..63497156 100644
--- a/stacks/keycloak-opa-poc/zookeeper.yaml
+++ b/stacks/keycloak-opa-poc/zookeeper.yaml
@@ -5,7 +5,7 @@ metadata:
   name: zk
 spec:
   image:
-    productVersion: 3.9.3
+    productVersion: 3.9.4
   servers:
     roleGroups:
       default:
diff --git a/stacks/nifi-kafka-druid-superset-s3/zookeeper.yaml b/stacks/nifi-kafka-druid-superset-s3/zookeeper.yaml
index b5702030..70c43c80 100644
--- a/stacks/nifi-kafka-druid-superset-s3/zookeeper.yaml
+++ b/stacks/nifi-kafka-druid-superset-s3/zookeeper.yaml
@@ -5,7 +5,7 @@ metadata:
   name: zookeeper
 spec:
   image:
-    productVersion: 3.9.3
+    productVersion: 3.9.4
   servers:
     roleGroups:
       default: