diff --git a/.github/ISSUE_TEMPLATE/update-product-zookeeper.md b/.github/ISSUE_TEMPLATE/update-product-zookeeper.md
index 6959a14df..14ee548e3 100644
--- a/.github/ISSUE_TEMPLATE/update-product-zookeeper.md
+++ b/.github/ISSUE_TEMPLATE/update-product-zookeeper.md
@@ -28,9 +28,11 @@ Add/Change/Remove anything that isn't applicable anymore
 ## Update tasks
 
 - [ ] Update `boil-config.toml` to reflect the agreed upon versions in the spreadsheet (including the removal of old versions).
-- [ ] Upload new version (see `zookeeper/upload_new_zookeeper_version.sh`).
 - [ ] Update `boil-config.toml` to the latest supported version of JVM (base and devel).
 - [ ] Update other dependencies if applicable (eg: jmx_exporter, etc).
+- [ ] Initialize new product versions with patchable and add patches if applicable.
+- [ ] Delete old patch directories.
+- [ ] Check the corresponding operator (getting_started / kuttl / supported-versions) for usage of the versions.
 - [ ] Check other operators (getting_started / kuttl / supported-versions) for usage of the versions. Add the PR(s) to the list below.
 - [ ] Update the version in demos. Add the PR(s) to the list below.
 
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5f2d0b988..2a5866e03 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -25,6 +25,7 @@ All notable changes to this project will be documented in this file.
 - spark-connect-client: Add `4.0.1` ([#1286]).
 - trino/trino-storage-connector: Add `477` ([#1285]).
 - testing-tools: Add `upload_new_keycloak_version.sh` script ([#1289]).
+- zookeeper: Add `3.9.4` ([#1292]).
 
 ### Changed
 
@@ -35,8 +36,6 @@ All notable changes to this project will be documented in this file.
 - stackable-devel: Bump ubi9 base image and update cargo-auditable to `0.7.0` ([#1253]).
 - vector: Bump to `0.49.0` ([#1258]).
 - airflow: Bump uvicorn dependency to `0.37.0` ([#1264]).
-- druid: Deprecate `33.0.0` ([#1263]).
-- opa: Deprecate `1.4.2` ([#1279]).
 - trino-cli: Bump to 477 ([#1285]).
 - tools: Bump dependency versions - kubectl to `1.34.1`, yq to `4.47.2`, and jq to `1.8.1` ([#1290]).
 - testing-tools: Update keycloak dependency to `26.3.5` and `python:3.12-slim-bullseye` base image ([#1289]).
@@ -80,6 +79,7 @@ All notable changes to this project will be documented in this file.
 [#1286]: https://github.com/stackabletech/docker-images/pull/1286
 [#1289]: https://github.com/stackabletech/docker-images/pull/1289
 [#1290]: https://github.com/stackabletech/docker-images/pull/1290
+[#1292]: https://github.com/stackabletech/docker-images/pull/1292
 
 ## [25.7.0] - 2025-07-23
 
diff --git a/zookeeper/boil-config.toml b/zookeeper/boil-config.toml
index 64ab0416d..c4f43981b 100644
--- a/zookeeper/boil-config.toml
+++ b/zookeeper/boil-config.toml
@@ -3,4 +3,11 @@ java-base = "17"
 java-devel = "11"
 
 [versions."3.9.3".build-arguments]
-jmx-exporter-version = "1.3.0"
+jmx-exporter-version = "1.4.0"
+
+[versions."3.9.4".local-images]
+java-base = "17"
+java-devel = "11"
+
+[versions."3.9.4".build-arguments]
+jmx-exporter-version = "1.4.0"
diff --git a/zookeeper/stackable/patches/3.9.4/0001-Add-CycloneDX-plugin.patch b/zookeeper/stackable/patches/3.9.4/0001-Add-CycloneDX-plugin.patch
new file mode 100644
index 000000000..0bd6070fc
--- /dev/null
+++ b/zookeeper/stackable/patches/3.9.4/0001-Add-CycloneDX-plugin.patch
@@ -0,0 +1,34 @@
+From 24644dd2f8463f972965d14021a7b071d8feaf81 Mon Sep 17 00:00:00 2001
+From: xeniape <xenia.fischer@stackable.tech>
+Date: Tue, 30 Sep 2025 15:24:05 +0200
+Subject: Add CycloneDX plugin
+
+---
+ pom.xml | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/pom.xml b/pom.xml
+index 860ffb97..5355571a 100644
+--- a/pom.xml
++++ b/pom.xml
+@@ -925,7 +925,7 @@
+         <plugin>
+           <groupId>org.cyclonedx</groupId>
+           <artifactId>cyclonedx-maven-plugin</artifactId>
+-          <version>2.7.9</version>
++          <version>2.8.0</version>
+        </plugin>
+       </plugins>
+     </pluginManagement>
+@@ -1200,6 +1200,11 @@
+       <plugin>
+         <groupId>org.cyclonedx</groupId>
+         <artifactId>cyclonedx-maven-plugin</artifactId>
++        <configuration>
++            <projectType>application</projectType>
++            <schemaVersion>1.5</schemaVersion>
++            <skipNotDeployed>false</skipNotDeployed>
++        </configuration>
+         <executions>
+           <execution>
+             <goals>
diff --git a/zookeeper/stackable/patches/3.9.4/patchable.toml b/zookeeper/stackable/patches/3.9.4/patchable.toml
new file mode 100644
index 000000000..2099babb5
--- /dev/null
+++ b/zookeeper/stackable/patches/3.9.4/patchable.toml
@@ -0,0 +1,2 @@
+mirror = "https://github.com/stackabletech/zookeeper.git"
+base = "7246445ec281f3dbf53dc54e970c914f39713903"