diff --git a/README.md b/README.md
index bfa21d7b1d..4bb7f5861f 100644
--- a/README.md
+++ b/README.md
@@ -29,6 +29,20 @@ preferring the old SDK interface, a legacy SDK module version is available with
 - [Known Issues](https://github.com/kubernetes-client/java/wiki/6.-Known-Issues)
 - [Troubleshooting/FAQ](https://github.com/kubernetes-client/java/wiki/7.-FAQ)
 
+To update the Maven project version across all `pom.xml` files, including the
+optional `fluent-gen` module, run:
+
+```
+./scripts/update-version.sh 28.0.0-SNAPSHOT
+```
+
+The helper delegates to the Maven Versions Plugin, so the equivalent Maven
+command is:
+
+```
+./mvnw -Pfluent-gen versions:set -DnewVersion=28.0.0-SNAPSHOT -DprocessAllModules=true -DgenerateBackupPoms=false
+```
+
 ## Support
 
 If you need support, start with checking whether you're hitting known issues. If that doesn't work, please [open an issue](https://github.com/kubernetes-client/java/issues/new)
diff --git a/client-java-contrib/admissionreview/pom.xml b/client-java-contrib/admissionreview/pom.xml
index 151be7aa5f..9e7f6a54b7 100644
--- a/client-java-contrib/admissionreview/pom.xml
+++ b/client-java-contrib/admissionreview/pom.xml
@@ -6,10 +6,10 @@
     <parent>
         <groupId>io.kubernetes</groupId>
         <artifactId>client-java-parent</artifactId>
-        <version>27.0.0-SNAPSHOT</version>
+        <version>28.0.0-SNAPSHOT</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
-    <version>27.0.0-SNAPSHOT</version>
+    <version>28.0.0-SNAPSHOT</version>
 
     <dependencies>
         <dependency>
diff --git a/client-java-contrib/cert-manager/pom.xml b/client-java-contrib/cert-manager/pom.xml
index b37c24a93e..d9c747ef21 100644
--- a/client-java-contrib/cert-manager/pom.xml
+++ b/client-java-contrib/cert-manager/pom.xml
@@ -6,11 +6,11 @@
     <parent>
         <groupId>io.kubernetes</groupId>
         <artifactId>client-java-parent</artifactId>
-        <version>27.0.0-SNAPSHOT</version>
+        <version>28.0.0-SNAPSHOT</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <!-- the version tracks the release version of the CRDs in the upstream cert-manager project -->
-    <version>27.0.0-SNAPSHOT</version>
+    <version>28.0.0-SNAPSHOT</version>
     <dependencies>
         <dependency>
             <groupId>io.kubernetes</groupId>
diff --git a/client-java-contrib/prometheus-operator/pom.xml b/client-java-contrib/prometheus-operator/pom.xml
index 3aac8a8131..9f9e1383f4 100644
--- a/client-java-contrib/prometheus-operator/pom.xml
+++ b/client-java-contrib/prometheus-operator/pom.xml
@@ -3,14 +3,14 @@
     <parent>
         <artifactId>client-java-parent</artifactId>
         <groupId>io.kubernetes</groupId>
-        <version>27.0.0-SNAPSHOT</version>
+        <version>28.0.0-SNAPSHOT</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
     <name>prometheus-operator-models</name>
     <artifactId>client-java-prometheus-operator-models</artifactId>
-    <version>27.0.0-SNAPSHOT</version>
+    <version>28.0.0-SNAPSHOT</version>
     <dependencies>
         <dependency>
             <groupId>jakarta.annotation</groupId>
diff --git a/e2e/pom.xml b/e2e/pom.xml
index 3def901bd6..e4b3af00bd 100644
--- a/e2e/pom.xml
+++ b/e2e/pom.xml
@@ -9,7 +9,7 @@
     <parent>
         <artifactId>client-java-parent</artifactId>
         <groupId>io.kubernetes</groupId>
-        <version>27.0.0-SNAPSHOT</version>
+        <version>28.0.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
diff --git a/examples/examples-release-latest/pom.xml b/examples/examples-release-latest/pom.xml
index 20d487149f..7697781c81 100644
--- a/examples/examples-release-latest/pom.xml
+++ b/examples/examples-release-latest/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
 		<groupId>io.kubernetes</groupId>
 		<artifactId>client-java-examples-parent</artifactId>
-		<version>27.0.0-SNAPSHOT</version>
+		<version>28.0.0-SNAPSHOT</version>
 		<relativePath>..</relativePath>
 	</parent>
 
diff --git a/examples/pom.xml b/examples/pom.xml
index f3027125cc..1922b19fec 100644
--- a/examples/pom.xml
+++ b/examples/pom.xml
@@ -4,11 +4,11 @@
 	<parent>
 		<groupId>io.kubernetes</groupId>
 		<artifactId>client-java-parent</artifactId>
-		<version>27.0.0-SNAPSHOT</version>
+		<version>28.0.0-SNAPSHOT</version>
 		<relativePath>../pom.xml</relativePath>
 	</parent>
 
-	<version>27.0.0-SNAPSHOT</version>
+	<version>28.0.0-SNAPSHOT</version>
 
 	<artifactId>client-java-examples-parent</artifactId>
 	<packaging>pom</packaging>
diff --git a/extended/pom.xml b/extended/pom.xml
index 6d294a4194..ace7b5cce9 100644
--- a/extended/pom.xml
+++ b/extended/pom.xml
@@ -9,7 +9,7 @@
     <parent>
         <artifactId>client-java-parent</artifactId>
         <groupId>io.kubernetes</groupId>
-        <version>27.0.0-SNAPSHOT</version>
+        <version>28.0.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
diff --git a/fluent-gen/pom.xml b/fluent-gen/pom.xml
index 5d21607366..161be7f984 100644
--- a/fluent-gen/pom.xml
+++ b/fluent-gen/pom.xml
@@ -9,7 +9,7 @@
   <parent>
     <groupId>io.kubernetes</groupId>
     <artifactId>client-java-parent</artifactId>
-    <version>27.0.0-SNAPSHOT</version>
+    <version>28.0.0-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/fluent/pom.xml b/fluent/pom.xml
index f7831027f5..ea17cd502f 100644
--- a/fluent/pom.xml
+++ b/fluent/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>io.kubernetes</groupId>
         <artifactId>client-java-parent</artifactId>
-        <version>27.0.0-SNAPSHOT</version>
+        <version>28.0.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
diff --git a/kubernetes/pom.xml b/kubernetes/pom.xml
index 4bdd6b9cf1..f250f2ce1a 100644
--- a/kubernetes/pom.xml
+++ b/kubernetes/pom.xml
@@ -9,7 +9,7 @@
   <parent>
     <groupId>io.kubernetes</groupId>
     <artifactId>client-java-parent</artifactId>
-    <version>27.0.0-SNAPSHOT</version>
+    <version>28.0.0-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/pom.xml b/pom.xml
index 98a8883287..9ce2ecd11d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -2,7 +2,7 @@
   <modelVersion>4.0.0</modelVersion>
   <artifactId>client-java-parent</artifactId>
   <groupId>io.kubernetes</groupId>
-  <version>27.0.0-SNAPSHOT</version>
+  <version>28.0.0-SNAPSHOT</version>
   <packaging>pom</packaging>
   <name>Kubernetes Client API</name>
   <url>https://github.com/kubernetes-client/java</url>
diff --git a/proto/pom.xml b/proto/pom.xml
index ba402dccfd..9dce301cef 100644
--- a/proto/pom.xml
+++ b/proto/pom.xml
@@ -8,7 +8,7 @@
   <parent>
     <groupId>io.kubernetes</groupId>
     <artifactId>client-java-parent</artifactId>
-    <version>27.0.0-SNAPSHOT</version>
+    <version>28.0.0-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/scripts/update-version.sh b/scripts/update-version.sh
new file mode 100755
index 0000000000..73ddd736ec
--- /dev/null
+++ b/scripts/update-version.sh
@@ -0,0 +1,37 @@
+#!/bin/bash
+
+# Copyright 2026 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+if [[ $# -ne 1 ]]; then
+  echo "Usage: $0 <new-version>" >&2
+  echo "Example: $0 28.0.0-SNAPSHOT" >&2
+  exit 1
+fi
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+REPO_ROOT="$(cd "${SCRIPT_DIR}/.." && pwd)"
+NEW_VERSION="$1"
+
+cd "${REPO_ROOT}"
+
+./mvnw -Pfluent-gen \
+  versions:set \
+  -DnewVersion="${NEW_VERSION}" \
+  -DprocessAllModules=true \
+  -DgenerateBackupPoms=false
\ No newline at end of file
diff --git a/spring-aot/pom.xml b/spring-aot/pom.xml
index 0ed5d2c0d1..5d4a026254 100644
--- a/spring-aot/pom.xml
+++ b/spring-aot/pom.xml
@@ -8,7 +8,7 @@
     <parent>
         <artifactId>client-java-parent</artifactId>
         <groupId>io.kubernetes</groupId>
-        <version>27.0.0-SNAPSHOT</version>
+        <version>28.0.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
     <properties>
diff --git a/spring/pom.xml b/spring/pom.xml
index 535935b0bf..700ac4689d 100644
--- a/spring/pom.xml
+++ b/spring/pom.xml
@@ -9,7 +9,7 @@
   <parent>
     <artifactId>client-java-parent</artifactId>
     <groupId>io.kubernetes</groupId>
-    <version>27.0.0-SNAPSHOT</version>
+    <version>28.0.0-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/util/pom.xml b/util/pom.xml
index 2cef7113e0..5e1f5f7f09 100644
--- a/util/pom.xml
+++ b/util/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>io.kubernetes</groupId>
         <artifactId>client-java-parent</artifactId>
-        <version>27.0.0-SNAPSHOT</version>
+        <version>28.0.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
     <dependencies>